Daikin RXQ20PY1 [248/355] Or cable duplex triplex only for the cool heat selector transmission wiring about the symbol 1 3 see figure 21 22 should be done within the following limitations if they are exceeded transmission problems may occur 1 between outdoor unit and indoor unit between outdoor unit and outdoor unit of other systems max wiring length 1 000 m max total wiring length 2 000 m max no of branches 16 note no branch is allowed after branch see figure 23 max no of outdoor units of other system that can be connected 10

Heat pump cooling only 50hz rx y q5 54p 310 1 safety cautions 311 1 specifications 312 1 what to do before operation 312 1 remote control and cool heat selector name and function of each switch and display refer to figure 2 and 3 313 1 operation range 313 1 operation procedure 313 1 optimum operation 317 1 seasonal maintenance 317 1 following symptoms are not air conditioner troubles 317 1 0 trouble shooting 319 2 heat pump 60hz rxyq5 54p 321 2 safety cautions 322 2 specifications 323 2 what to do before operation 323 2 remote control and cool heat selector name and function of 4

Part 2 installation manual 13 4

Part 3 operation manual 09 4

Drawings flow charts iii 5

Index i 5

Part 4 precautions for new refrigerant r 410a 33 5

Preface 6

Appendix 28 7

Caution for refrigerant leaks 24 7

Hand over to customer 27 7

Installation 9 7

Part 1 general information 7

Points to bear in mind at the system design 2 7

Product outline 7

Test operation 2 7

General information 8

Heat pump rx y q 16ph 18ph 24ph 26ph 28ph 30ph 32ph 34ph 36ph y1 e yl e 38ph 40ph 42ph 44ph 46ph 48ph 50ph 8

Heat pump rx y q 5p 8p 10p 12p 14p 16p 18p 20p 22p y1 e yl e 24p 26p 28p 30p 32p 34p 36p 38p 40p 42p 44p 46p 48p 50p 52p 54p 8

High cop series energy saving series 8

Indoor units 8

Model names of indoor outdoor units 8

Outdoor units normal series 8

Product outline 8

Product outline sien34 705 8

Series model name power supply 8

600 ceiling mounted cassette type multi flow 9

Ceiling mounted built in type 9

Ceiling mounted cassette corner type 9

Ceiling mounted cassette type double flow 9

Ceiling mounted cassette type multi flow 9

Ceiling mounted duct type 9

Ceiling suspended cassette type connection unit series 9

Ceiling suspended type 9

Concealed floor standing type 9

External appearance 9

Floor standing type 9

General information 3 9

Indoor units heat pump 50hz 60hz cooling only 50hz 9

Outdoor air processing unit 9

Sien34 705 product outline 9

Slim ceiling mounted duct type 9

Wall mounted type 9

Outdoor units heat pump 50hz 60hz cooling only 50hz 10

Combination of outdoor units 12

Connectable indoor unit 14

Fxdq p n a ve with drain pump fxzq only for eu australia 14

General information 14

Hp 2 hp 2 hp 3 hp 4hp 5hp 8hp 10hp 14

Indoor unit capacity 14

New refrigerant model code p20 type p25 type p32 type p40 type p50 type p63 type p80 type p100 type p125 type p200 type p250 type selecting model capacity 2 kw 2 kw 3 kw 4 kw 5 kw 7 kw 9 kw 11 kw 14 kw 22 kw 28 kw equivalent output 0 hp 1hp 14

Note fxdq has following 2 series as shown below fxdq p n a vet without drain pump 14

Product outline sien34 705 14

Use the above tables to determine the capacities of indoor units to be connected make sure the total capacity of indoor units connected to each outdoor unit is within the specified value kw the total capacity of connected indoor units must be within a range of 50 to 130 of the rated capacity of the outdoor unit in some models it is not possible to connect the maximum number of connectable indoor units select models so the total capacity of connected indoor units conforms to the specification 14

Differences from conventional models 15

Connectable indoor units number and capacity normal series 16

General information 16

Model selection 16

Product outline sien34 705 16

Vrv iii heat pump 50hz 60hz cooling only 50hz 16

General information 11 17

High cop series energy saving series 17

Sien34 705 product outline 17

Points relating to the performance of the air conditioning units 18

Points to bear in mind at the system design 18

General information 20

How these installation problems affect an equipment are shown below 20

Points to bear in mind at the system design sien34 705 20

The analysis of major installation problems experienced is shown below 20

The installation is of vital importance 20

Note 1 the division of the work should be thoroughly clarified this applies particularly to work relating to the connection of control wiring fitting of remote control and central control panel boundary work on areas such as connection of drain piping and humidification supply piping inspection and foundation 2 keep a constant check on the progress of the construction work to avoid deviations from the air conditioning work schedule 3 for sleeve and insert work the positions of ceiling girders should be confirmed and sleeve and insert requirement hole diameters positioning and numbers decided this is particularly important in the case of sleeves for drain piping 21

Striking a balance between system installation and general construction work comprehensive flow chart 21

At the contract drawing stage the following points are critical 22

Contract drawing 22

Objectives include the drawings should be easily comprehensible to those carrying out the work the contents of the drawings should not be subject to subsequent alteration 22

Points to bear in mind when preparing the contract drawings 22

The following is a list of the main points to be considered when preparing contract drawings for the iii system and should be used as a reference during this stage of the work 22

The following points should be borne in mind when preparing the contract drawings from the original drawings and the execution drawings the contract drawings for the air conditioning system are blueprints for the performance of the necessary work which are drawn up on the basis of the original drawings in such a way that a working balance is achieved between the specific requirements of each individual aspect of the work 22

For details on field settings and centralized control group no refer to the installation manual and system reference materials 23

General information 17 23

In addition to the design of the appropriate this system configuration it is also essential that the control system be made amply clear if the system is designed and installed without a clear comprehensive plan then problems are inevitably going to occur during the test run servicing too will become much more time consuming than necessary however if control circuit diagrams are prepared along with the contract drawings in order to make the total system clearly visible then the essential points relating to the electrical connections will be easily understood the test run will go off without a hitch and the whole system will be rendered fully effective 23

Main considerations in preparation of control circuit diagrams 23

Mark each outdoor unit with a code 2 add field settings and data for outdoor units and outdoor unit no if using sequential start 3 add the model number of each indoor unit connected to each refrigerant circuit 4 assign each indoor unit a code 5 fill in the location of each indoor unit 6 group indoor units controlled by one or two remote controls group or individual control 7 assign central group nos if using centralized control 8 add field settings and optional equipment for indoor units 9 add unit no if making separate field settings for each indoor unit under group control 23

Note with the vrv iii r 410a heat pump cooling only series unit no is determined through automatic addressing therefore readout unit nos after activating the power 23

Sien34 705 points to bear in mind at the system design 23

Step 1 compiling a system list 23

Example control circuit diagram 24

Step 2 preparation of the control circuit diagrams 24

General information 19 25

Installation 25

Sien34 705 installation 25

Step by step installation procedure 25

The above list indicates the order in which the individual work operations are normally carried out but this order may be varied where local conditions warrant such a change 25

Positioning of the pipe holes 26

Positioning the insert 26

Sleeve and insert work 26

Work involved in individual operations and points to be borne in mind 26

Essential points when installing an indoor unit 27

Example ceiling mounted cassette type fxcq63m 27

General information 21 27

Height take care to account for final ceiling facing surface level 2 level level fitting is essential within 1 degree of horizontal 3 direction the unit must be fitted in line with the ultimately visible ceiling joints 27

Important points 1 the suspension bolts must be strong enough to support the weight of the indoor unit 2 optional features must be added to the indoor unit prior to installation 3 the model name should be checked prior to installation 4 take care to align the main unit correctly bearing in mind piping layout and direction of blow out 5 leave sufficient space for servicing to be carried out 6 make inspection holes for model which need them 7 fit the unit to ensure proper drainage 27

Installation of indoor unit 27

Operational steps 27

Positioning 27

Sien34 705 installation 27

General information 28

Installation sien34 705 28

Operational steps 28

Refrigerant pipe work 28

The 3 principles of refrigerant piping 28

The 3 principles of refrigerant piping must be strictly observed 28

Method for replacing nitrogen brazing 29

Covering of refrigerant pipes 30

Refrigerant pipe flushing 31

1 2h shows the material type of jis h 3300 the thickness and material should comply with relevant local and national regulations for the design pressure 4 mpa 40bar select the wall thickness in accordance with relevant local and national regulations 32

3 make sure to use the particular branches of piping that have been selected referring to chapter example of connection 4 the piping minimum thickness and material the min thickness of the pipes shows the requirements of japanese high pressure gas control low as of jan 2003 and the temper grade 32

A refrigerant piping selection of piping material 1 foreign materials inside pipes including oils for fabrication must be 30mg 10m or less 2 use the following material specification for refrigerant pipping construction material phosphoric acid deoxidized seamless copper for refrigerant size determine the proper size referring to chapter example of connection the wall thickness of the refrigerant piping should comply with relevant local and national regulations for r 410a the design pressure is 4 mpa 40 kgf c 32

Choice of materials for refrigerant piping 32

General information 32

Installation sien34 705 32

The nature and amount of the extraneous material inside the pipe can be checked during flushing by placing a rag lightly over the end of the pipe in the unlikely case that even a small quantity of moisture is found then the inside of the pipe should be dried out thoroughly action 1 flush the inside of the pipe with nitrogen gas until such time as the moisture disappears 2 carry out a thorough vacuum drying operation see page 39 1 close the main valve on the nitrogen cylinder 2 repeat the above operation for unit b 3 when the liquid pipe operations have been completed then do the same with the gas pipes 32

B brazed joints and special branches 1 general use l bend joint socket joint t joint etc joints must meet the requirements of the relevant jis standard size materials thickness etc 2 special branches the daikin outdoor unit multi connection kit refnet joint refnet header or reducing socket should be used 33

Branches 33

Equivalent piping length of joints and header reference 33

Example r 410a rxyq p series 33

General information 27 33

Refer detail of daikin refnet joint and refnet header on page 161 33

Refnet header 33

Refnet joint 33

Sien34 705 installation 33

200 225 250 315 400 450 500 34

Brazing rod diameter φ 34

C brazing the multi system requires only copper copper jointing and the jointing method is explained below the use of hard solder is essential 34

General information 34

Hard solder 34

Installation sien34 705 34

Note the values in the table above are for type b torch french 34

Nozzle tip no 34

Piping size 34

Table 1 correlation of nozzle tip and size of refrigeration piping 34

The r 410a heat pump cooling only rx y q p series uses a wide range of piping sizes you should therefore be careful when selecting the nozzle tip if a small nozzle tip is used for brazing piping of large diameters such as φ 38 and φ 44 brazing flow becomes poor 34

Brazing 35

A stiffened pipe must always be annealed at least once prior to the flaring work b a pipe cutter must be used to cut the pipe a large pipe cutter must be used where the pipe has a large diameter when cutting a pipe which is too big for the pipe cutter a metal saw may be used but care must be taken to ensure that the debris from sawing does not get into the pipe c set the flaring tool to make sure the flare size remains within the prescribed limits 36

D coat the inner and outer surface of the flare with refrigerator oil ester or ether oil this ensures that the flare nut passes smoothly preventing the pipe from twisting do not use suniso 4gs oil 36

Flare connection 36

Flare gauge adapter corresponding to the new rank when using the later use a flare gauge to take out the pipe from the gauge bar adjust it and then carry out the flare processing 36

General information 36

Installation sien34 705 36

Mm 72mm 1 0 mm each 36

New rank compatible flare tool compared to previous refrigerants the components of a hfc refrigerant is small r 410a also has a higher pressure than other refrigerants therefore in order to strengthen the intensity of the form and size of the flare section used for r 410a class 2 apparatus unlike the specification of the conventional refrigerants it was set up with different standards when carrying out flare processing use a new rank compatible flare tool or a conventional flare tool 36

Size from the dice surface to the copper tip in mm 36

Check that there is no superficial damage to the surface of the flare 37

General information 31 37

Important points 1 burrs should be carefully removed 2 2 spanners should be used to grip the flare nuts 3 the flare nut must be inserted before starting the flaring operation 4 the appropriate amount of torque should be used to tighten the flare nut 37

Sien34 705 installation 37

Standard torques for tightening flare nut 37

Flaring procedure 38

Not recommendable but in case of emergency 39

Tighten the flare but with proper torque 39

A the flange sheet surface should be clean and undamaged clean any dirt away with a cloth and check that there has been no damage b coat the flange sheet surface with refrigeration oil ester or ether oil and then insert the packing do not use suniso oil 40

C tighten the bolts in opposite corners first to ensure that the connection is true 40

Flange connection 40

General information 40

Important points 1 only clean refrigeration oil should be used to coat the flange i e free from dirt or water 2 the correct amount of torque should be applied when tightening the flange bolts 40

Installation sien34 705 40

Iso hexagonal bolt 40

Standard torques for tightening screws and bolts 40

Essential points of thermal insulation 41

Materials 41

Thermal insulation work refrigerant piping 41

Air tight test 42

Essential points of testing maintaining pressure over a period 42

Check 1 where pressure falls while carrying out steps 1 to 3 described on previous page check by ear listen for the sound of a major leak check by hand check for leak by feeling around jointed sections with hand soap and water check snoop bubbles will reveal the presence of a leak 44

Check 2 when searching for a minor leak or when there has been a fall in pressure while the system has been fully pressurized but the source of the leak cannot be traced 1 release the nitrogen until the pressure reaches 0 mpa 2 increase pressure to 1 mpa using gaseous flon gas r 410a nitrogen and flon gas mixed 3 search for the source of the leak using a leak detector 4 if the source of the leak still cannot be traced then repressurize with nitrogen up to 4 0mpa and check again the pressure must not be increased to more than 4 0mpa 44

Checking for leaks 44

General information 44

Important points 1 where the lengths of piping involved are particularly long then the air tight test should be carried out block by block example 1 indoor side 2 indoor side vertical pipes 3 indoor side vertical pipes outdoor side 44

Installation sien34 705 44

Setup of air tight test referring to following figure connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit the shutoff valve and valve a c in following figure should be open or closed as shown in the table below 44

Key points lower the degree of vacuum to below 755mmhg 45

The evacuation of air conditioner piping provides the following effects 1 vacuum drying 2 removes air and nitrogen used in air tightness test from the inside of pipes therefore it is necessary to ensure that the both purposes have been achieved in the vacuum drying operation 45

Vacuum drying 45

Vacuum drying is the use of a vacuum pump to vaporize gasify the moisture liquid inside the pipes and expel it leaving the pipes completely dry inside at 1 atm 760 mmhg the boiling point evaporating temperature of water is 100 c but if a vacuum is created inside the pipes using a vacuum pump then the boiling point is rapidly reduced as the degree of the vacuum is increased if the boiling point is reduced to a level below that of the ambient temperature then the moisture in the pipes will evaporate 45

What is vacuum drying 45

Choosing a vacuum pump 46

2 degree of vacuum ultimate vacuum varies largely according to use of the vacuum pump vacuum pumps used for vacuum forming cannot be used for vacuum drying a vacuum pump with a high degree of vacuum is required 47

Degree of vacuum is expressed in torr micron mmhg and pascal pa the units correlate as follows 47

Degree of vacuum measurement an extremely accurate vacuum gauge is required to test degree of vacuum you cannot accurately measure degree of vacuum with the compound gauge on the gauge manifold a pirani vacuum gauge is required to measure degree of vacuum accurately because pirani gauges are very sensitive and require extreme care when using they are not very suitable for use in the field you should therefore use the pirani gauge to calibrate the attached vacuum gauge on the gauge manifold and the degree of vacuum of the vacuum pump 47

General information 41 47

Sien34 705 installation 47

Vacuum pump maintenance because of their nature most vacuum pumps contain large amounts of oil which lubricates bearings etc and functions to enhance airtightness of pistons when using a vacuum pump to discharge air from refrigerant piping moisture in the air tends to get mixed in with the oil you must therefore change oil periodically and make sure the proper oil level is maintained perform periodic inspections in accordance with the operating instructions 47

When selecting a vacuum you should select one which is capable of achieving 0 torr of ultimate vacuum 47

Calibration method 1 connect a pirani vacuum gauge and the gauge manifold vacuum gauge 0 760 mmhg to the vacuum pump at the same time and run the pump for about 3 minutes 2 make sure the reading of the pirani vacuum gauge is 5 torr 667 pa or less the reading of conventional vacuum pumps lowers to about 0 torr if the reading is not 5 torr or less check the vacuum pump oil oil is low in many cases 3 check the attached gauge on the gauge manifold adjust the gauge if the reading is not exactly correct 4 adjust the gauge manifold valve so that the pirani vacuum gauge reads 5 torr 5 mark the position indicated by the gauge manifold gauge with an oil based ink pen 6 use the mark of the gauge manifold as a target when vacuuming in the field 48

General information 48

Installation sien34 705 48

Many handy pumps fall into this category 48

Reference types of vacuum pump with respective maximum degree of vacuum 48

Vacuum drying procedure 49

Additional charge of refrigerant at installation time 51

Refrigerant charging instructions 51

Drain pipe gradient and support 53

Drain pipe work indoor 53

Drain trap 53

General information 54

Grouped drain piping 54

If a drain pan made of polystyrene foam is used then an auxiliary drain hose flexible is also essential a flexible drain hose permits the drain socket and drain pipe to be connected without difficulty and prevents any undue strain being placed on the drain pan 54

Important points 1 the drain pipe should be at least equal in size to that of the indoor unit 2 the drain pipe is thermally insulated to prevent the formation of condensation inside the pipe 3 the drain up mechanism should be fitted before the indoor unit is installed and when the electricity has been connected some water should be added to the drain pan and the drain pump checked to see that it is functioning correctly 4 all connections should be secure special care is needed with pvc pipe the use of a colored adhesive with pvc pipes will help you to remember to connect them up 54

Installation sien34 705 54

It is standard work practice to make connections to the main pipe from above the pipe down from the combination should be as large as possible 54

The pipework should be kept as short as possible and the number of indoor units per group kept to a minimum 54

Use of an auxiliary drain hose flexible 54

Ceiling mounted cassette type fxcq m double flow 55

Drain piping for each model 55

Drain piping work rig the drain pipe as shown below and take measures against condensation improperly rigged piping could lead to leaks and eventually wet furniture and belongings 55

Drain pump kit 55

General information 49 55

Notes allowed flow rate figures below the decimal have been discarded use vp30 or larger pipe in risers use the same drain pipe for the humidifier as the indoor unit 55

Notes calculations have been made with water area inside the pipe as 10 allowable flow rate figures below the decimal have been discarded use vp30 or larger pipe after the convergence point 55

Piping diameter for grouped drain pipes 55

Relationship between horizontal pipe diameter and allowable drainage for extended ventilation system 55

Relationship between riser diameter and allowable drainage for extended ventilation system 55

Select piping diameter from the below table in accordance with the amount of condensation drained by all units with a common drain pipe consider 2 l hr of drainage for every 1 hp for example drainage from 3 units running at 2 hp and 2 units running at 3 hp is calculated as follows 2 l hr 2 hp 3 units 2 l hr 3 hp 2 units 24 l hr 55

Sien34 705 installation 55

1 carry out the drain piping the diameter of the drain pipe should be greater than or equal to the diameter of the connecting pipe vinyl tube pipe size 25 mm outer dimension 32 mm keep the drain pipe short and sloping downwards at a gradient of at least 1 100 to prevent air pockets from forming if the drain hose cannot be sufficiently set on a slope execute the drain raising piping to keep the drain hose from sagging space hanging wires every 1 to 1 m 56

Caution setting the unit at an angle opposite to the drain piping might cause leaks 56

General information 56

If converging multiple drain pipes install according to the procedure shown below 56

Installation sien34 705 56

Precautions for drain raising piping install the drain raising pipes at a height of less than 310 mm install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit 56

Select converging drain pipes whose gauge is suitable for the operating capacity of the unit 56

Use the attached drain hose and clamp metal insert the drain hose into the drain socket up to the white tape tighten the clamp until the screw head is less than 4mm from the hose wrap the attached sealing pad over the clamp and drain hose to insulate insulate the drain hose inside the building 56

Ceiling mounted cassette type fxfq m multi flow 58

General information 53 59

Install the drain raising pipes at a height of less than 550 mm install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit 59

Note to ensure no excessive pressure is applied to the included drain hose 1 do not bend or twist when installing this may cause leakage if converging multiple drain pipes install according to the procedure shown below 59

Select converging drain pipes whose gauge is suitable for the operating capacity of the unit 59

Sien34 705 installation 59

Caution drain piping connections do not connect the drain piping directly to sewage pipes that smell of ammonia the ammonia in the sewage might enter the indoor unit through the drain pipes and corrode the heat exchanger keep in mind that it will become the cause of getting drain pipe blocked it water collects on drain pipe 60

General information 60

Installation sien34 705 60

Ceiling mounted cassette corner type fxkq ma 61

Drain piping work 61

2 after piping work is finished check drainage flows smoothly open the inspection opening add approximately 1liter of water slowly into the drain pan and check drainage flow 62

Caution drain piping connections do not connect the drain piping directly to sewage pipes that smell of ammonia the ammonia in the sewage might enter the indoor unit through the drain pipes and corrode the heat exchanger keep in mind that it will become the cause of getting drain pipe blocked if water collects on drain pipe 62

General information 62

Installation sien34 705 62

Note use the drain outlet for maintenance to drain water from the drain pan 62

Slim ceiling mounted duct type fxdq 63

Ceiling mounted built in type fxsq m 65

No good good 65

Ceiling mounted duct type fxmq ma 67

Ceiling suspended type fxhq ma 69

General information 63 69

Sien34 705 installation 69

Caution 71

Drain piping connections do not connect the drain piping directly to sewage pipes that smell of ammonia the ammonia in the sewage might enter the indoor unit through the drain pipes and corrode the heat exchanger keep in mind that it will become the cause of getting drain pipe blocked if water collects on drain pipe 71

General information 65 71

Sien34 705 installation 71

Wall mounted type fxaq ma 71

Floor standing concealed floor standing type fxlq ma fxnq ma 72

Ceiling suspended cassette type fxuq ma 73

Outdoor air processing unit fxmq mf 76

Control wiring 77

Electrical work 77

Power supply cabling of main power supply 78

Duct work indoor 80

Taking account of noise and vibration 80

Branch switch overcurrent breaker 81

Caution 1 an inverter air conditioner may cause electronic noise generated from am broadcasting examine where to install the main air conditioner and electric wires keeping proper distances away from stereo equipment personal computers etc 81

General information 75 81

If the electric wave of am broadcasting is particularly weak keep distances of 3m or more if the electric wave of am broadcasting is particularly weak keep distances of 3m or more and use conduit tubes for power and transmission lines 2 in heavy snowfall areas select an installation site where snow will not affect operation of the unit 3 if condensate may drip on downstairs walkway depending on the floor condition take a measure such as the installation of central drain pan kit sold separately 4 the refrigerant r 410a itself is nontoxic nonflammable and is safe if the refrigerant should leak however its concentration may exceed the allowable limit depending on room size due to this it could be necessary to take measures against leakage refer to the chapter caution for refrigerant leaks 81

Indoor unit 81

No limit to wall height no limit to wall height 81

Personal computer or radio 81

Selection of location 81

Sien34 705 installation 81

This unit both indoor and outdoor is suitable for installation in a commercial and light industrial environment if installed as a household appliance it could cause electromagnetic interference the vrv outdoor units should be installed in a location that meets the following requirements 1 the foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation 2 the space around the unit is adequate for servicing and the minimum space for air inlet and air outlet is available refer to below figure and choose one of both possibilities 3 there is no danger of fire due to leakage of inflammable gas 4 ensure that water cannot cause any damage to the location in case it drips out the unit e g in case of a blocked drain pipe 5 the piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length see example of connection 6 select the location of the unit in such a way that neither the discharged air 81

Service space 82

Inspecting and handling the unit 83

Foundation of units 84

General information 84

Installation of outdoor unit 84

Installation sien34 705 84

Notes 1 the proportions of cement sand gravel for the concrete shall be 1 2 4 and ten reinforcement bars that their diameter are 10mm approx 300mm intervals shall be placed 2 the surface shall be finished with mortar the corner edges shall be chamfered 3 when the foundation is built on a concrete floor rubble is not necessary however the surface of the section on which the foundation is built shall have rough finish 4 a drain ditch shall be made around the foundation to thoroughly drain water from the equipment installation area 5 when installing the equipment on a roof the floor strength shall be checked and water proofing measures shall be taken 6 y groove unnecessary for 5hp models 7 when selecting the piping from the bottom provide the height 200mm or more from a base 84

Operational steps 84

Bolt pitch 85

General information 79 85

Make sure the unit is installed level on a sufficiently strong base to prevent vibration and noise secure the unit to its base using foundation bolts use four commercially available m12 type foundation bolts nuts and washers the foundation bolts should be inserted 20 mm make sure the base under the unit extended more than 765mm behind the unit the height of the base should be at least 150mm from the floor the unit must be installed on a solid longitudinal foundation steelbeam frame or concrete as indicated in figure 85

Notes 1 when installing on a roof make sure the roof floor is strong enough and be sure to water proof all work 2 make sure the area around the machine drains properly by setting up drainage grooves around the foundation drain water is sometimes discharged from the outdoor unit when it is running 3 for anti corrosion type use nuts with resin washers if the paint on nut connections comes off the anti corrosion effect may decrease 85

Sien34 705 installation 85

Unpacking and placing the unit 85

Caution caution label 86

Do not use stands to support the corners 86

To in s t a ller s 86

And pull the panel towards you 87

Beware the fan running when inspect do not touch the charged parts when inspect 87

Caution for removing and installing the el compo box cover 87

Check the system status on led h2p on the pc board a1p from inspection door on the el compo box cover led display shows turning off normal turning on abnormal flashing under preparation for multi system check the pc board of the master unit the master unit is the outdoor unit connected to the transmission wiring to the indoor units 87

For removing the front panel lift the panel a little 87

For the location of the el compo box and the service port see as shown below on the right 87

To all handlers 87

To service person 87

Warning caution to electric shock 87

Check work prior to turn power supply on 88

Procedure and outline 88

Test operation 88

Be sure to turn the power on 6 hours before starting operation to protect compressors to power on clankcase heater 89

Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate 89

Check for normal operation 89

Check the led display of the outdoor unit pc board 89

Check to be sure the transmission is normal the transmission is normal if the leds display conditions as shown in table below 89

Conduct check operations 89

General information 83 89

Make field settings if needed for the setting procedure refer to information in 4 field setting from outdoor unit on page 101 onward for the outdoor multi system make field settings with the master unit field settings made with the slave unit will be all invalid 89

Make field settings with outdoor unit pc board 89

Sien34 705 test operation 89

The check operations shown below will be automatically initiated check for erroneous wirings check for failure to open stop valves check for excessive refrigerant refilling automatic judgment of piping length 89

The master unit is the outdoor unit to which the transmission wiring for the indoor units is conncted the other outdoor units are slave units 89

Turn outdoor unit and indoor unit power on 89

Turn power on 89

Check operation 90

Check operation procedure 90

How to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 90

Note1 onsite settings with the power off if the cool heat selector was connected to the outdoor unit set the dip switch ds1 on the outdoor unit pc board a1p to on it is set to off when shipped from the factory for the position of the dip switch ds1 see the service precautions label see at right which is attached to the el compo box lid 90

Step1 make the onsite setting as needed using the dip switches on the outdoor unit pc board a1p with the power off see below instruction note1 step2 close the el compo box lid and all front panels except as the side of the el compo box and turn on the power to the outdoor unit and all connected indoor units be sure to turn the power on at least 6 hours before operation in order to have power running to the crank case heater step3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 90

Step4 make the onsite settings as needed using the push button bs1 bs5 on the outdoor unit pc board a1p with the power on see 4 field setting from outdoor unit step5 perform the check operation following the check operation method of the service precautions label on the el compo box lid the system operation for about 40 minutes and automatically stops the check operation if the malfunction code is not displayed in the remote control after the system stop check operation is completed normal operation will be possible after 5 minutes if the malfunction code is displayed in the remote control correct the malfunction following remote control displays malfunction code and perform the check operation again 90

If any malfunction codes other than the above are displayed check the service manual for how to respond 91

Remote control displays malfunction code 91

Be sure to push and hold the reset button for 5 seconds if not the addition cannot be recognized in this case the unit cannot be run for up to 12 minutes to automatically set the address indoor outdoor address etc status 92

Caution when the 400 volt power supply is applyed to n phase by mistake replace inverter p c b a2p and control transformer t1r t2r in switch box together 92

Operation when power is turned on 92

Tap the reset button on the outdoor unit pc board operation becomes possible for about 2 minutes if you do not push the reset button the unit cannot be run for up to 10 minutes to automatically set master power status 92

The unit cannot be run for up to 12 minutes to automatically set the master power and address indoor outdoor address etc status 92

When an indoor unit or outdoor unit has been added or indoor or outdoor unit pc board has been changed 92

When turning on power first time 92

When turning on power the second time and subsequent 92

1 microcomputer normal monitor this monitor blinks while in normal operation and turns on or off when a malfunction occurs 93

2 set mode display led leds display mode according to the setting 93

3 mode setting switchused to change mode 93

4 local setting switch used to make field settings 93

Outdoor unit pc board 93

Outdoor unit pc board layout 93

Field set mode 94

Field setting 94

Field setting from remote control 94

First code no 94

Mode no 94

Second code no 94

Unit no 94

Field set mode 95

Infrared remote control indoor unit 95

Mode no 95

Second code no first code no 95

Simplified remote control 96

General information 91 97

Notes 1 settings are made simultaneously for the entire group however if you select the mode no inside parentheses you can also set by each individual unit setting changes however cannot be checked except in the individual mode for those in parentheses 2 the mode numbers inside parentheses cannot be used by infrared remote controls so they cannot be set individually setting changes also cannot be checked 3 marked are factory set 4 do not make settings other than those described above nothing is displayed for functions the indoor unit is not equipped with 5 88 may be displayed to indicate the remote control is resetting when returning to the normal mode 6 if the setting mode to equipped heat reclaim ventilation fan conducts the fan residual operation by linking to indoor unit 97

Setting contents and code no vrv indoor unit 97

Sien34 705 test operation 97

1 static pressure selection 98

Applicable range of field setting 98

General information 98

Test operation sien34 705 98

By setting to set fan speed you can switch the fan speed to the set fan speed when the heating thermostat is off since there is concern about draft if using fan speed up when thermostat is off you should take the setup location into consideration 99

Detailed explanation of setting modes 99

External on off input 99

Fan speed changeover when thermostat is off 99

Filter sign setting 99

If switching the filter sign on time set as given in the table below set time 99

Setting table 99

This input is used for on off operation and protection device input from the outside the input is performed from the t1 t1 terminal of the operation terminal block x1a in the electric component box 99

Ultra long life filter sign setting 99

When a ultra long life filter is installed the filter sign timer setting must be changed 99

Air flow adjustment ceiling height 100

Auto restart after power failure reset 100

Caution 1 the air conditioner starts operation suddenly after power failure reset or the main power supply turned on again consequently the user might be surprised with question for the reason why 2 in the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit operation the fan rotates 100

For the above reasons when the unit is set enabling to utilize auto restart function after power failure reset utmost care should be paid for the occurrence of the following situation 100

For the air conditioners with no setting for the function same as factory setting the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off however for the air conditioners with the setting the units may start automatically after power failure reset or the main power supply turned on again return to the same operation condition as that of before power failure 100

In the case of fxfq100 125 100

In the case of fxfq25 80 100

In the case of fxuq71 125 100

Make the following setting according to the ceiling height the setting position no is set to 01 at the factory in the case of fxaq fxhq 100

Air flow direction setting 101

Air flow rate switching at discharge grille for field air flow rate switching 101

Make the following air flow direction setting according to the respective purpose 101

Only the model fxkq has the function when only the front flow is used sets yes no of the swing flap operation of down flow 101

Set the air flow direction of indoor units as given in the table below set when optional air outlet blocking pad has been installed the second code no is factory set to 01 101

Setting of air flow direction adjustment 101

Setting of air flow direction adjustment range 101

Setting of the static pressure selection for fxdq model 101

Setting table 101

When the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate follow the instruction manual for the optional parts to enter the setting numbers 101

Note bold face in indicates the default setting 102

Outdoor air processing unit field setting remote control 102

Brc7c type brc7e type brc4c type 104

Caution when turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for about 1 minute on the liquid crystal display this is not an operative fault 104

Enter the selected group numbers by pushing button 5 push button and return to the normal mode 104

Field set mode 104

General information 104

Group no 104

Group no setting by infrared remote control for centralized control 1 when in the normal mode push button for 4 seconds or more and operation then enters the field set mode 2 set mode no 00 with button 3 set the group no for each group with button advance backward 104

Group no setting example 104

Mode no 104

Test operation sien34 705 104

Contents of control modes 105

Setting of operation control mode from remote control local setting 105

Do not select timer operation possible by remote control if not using a remote control operation by timer is impossible in this case 1 factory setting 106

How to select operation mode 106

Whether operation by remote control will be possible or not for turning on off controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below 106

Field setting from outdoor unit 107

List of field setting items this following section indicates the list of field setting items for the lists of dip switch contents setting mode 1 and setting mode 2 refer to information in tables shown on the following page onward for setting items of 1 refer to detailed information provided on page 111 onward 107

For setting items of 1 refer to detailed information provided on page 112 onward 108

Setting by dip switches using dip switches on the pc board enables field setting shown below however make no changes of factory settings except for ds1 1 108

7 8 7 7 7 7 110

A setting mode 1 110

General information 110

Procedure for changing cool heat selection setting 110

Test operation sien34 705 110

This mode is used to set and check the following items 1 set items in order to make cool heat selection in a batch of outdoor unit group change the setting cool heat selection ind used to select cool or heat by individual outdoor unit factory set cool heat selection master used to select cool or heat by outdoor unit group with the master unit cool heat selection slave used to select cool or heat by outdoor unit group with the slave unit 2 check items the following items can be checked 1 current operating conditions normal abnormal in check operation 2 setting conditions of cool heat selection individual batch master batch slave 3 low noise operating conditions in normal operation in low noise operation 4 demand operating conditions in normal operation in demand operation 110

B setting mode 2 111

7 7 7 7 7 115

7 7 7 7 8 115

7 7 7 7 9 115

7 7 7 8 7 115

7 7 7 8 8 115

7 7 7 9 7 115

7 7 8 7 7 115

7 7 8 7 8 115

7 7 8 8 7 115

7 7 8 8 8 115

7 7 9 7 7 115

7 8 7 7 7 115

7 8 7 7 8 115

7 8 7 8 7 115

7 8 7 8 8 115

7 8 8 7 7 115

7 8 8 7 8 115

7 8 8 8 7 115

7 8 8 8 8 115

8 7 7 7 7 115

8 7 8 7 7 115

8 7 8 7 8 115

8 7 8 8 7 115

8 8 7 7 8 115

C monitor mode 115

Defrost select setting short 115

Emg operation backup operation setting 115

General information 109 115

Setting item 0 display contents of number of units for various settings 115

Sien34 705 test operation 115

Tc setting h 115

Te setting h 115

The numbers in the no column represent the number of times to press the set bs2 button 115

Cool heat mode switching heat pump model only 117

For the details refer to the installation manual supplied together with the indoor unit 117

In the case of infrared remote controls 117

In the case of wired remote controls 117

It does not matter whether or not there is outdoor outdoor unit wiring set outdoor unit pc board ds1 1 to in factory set set cool heat switching to ind individual for setting mode 1 factory set set the master unit indoor unit having the right to select the cooling heating operation mode 117

Set cool heat separately for each outdoor unit system by indoor unit remote control 117

There are the following 4 cool heat switching modes set cool heat separately for each outdoor unit system by indoor unit remote control set cool heat separately for each outdoor unit system by cool heat switching remote control set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote control set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by cool heat switching remote control 117

Cool heat selector 118

General information 118

Set cool heat separately for each outdoor unit system by cool heat switching remote control it does not matter whether or not there is outdoor outdoor unit wiring set outdoor unit pc board ds1 1 to out factory set set cool heat switching to ind individual for setting mode 1 factory set 118

Test operation sien34 705 118

Multi outdoor units connection 119

P ds1 ds2 119

Set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote control install the external control adapter for outdoor unit on either the outdoor outdoor indoor outdoor transmission line set outdoor unit pc board ds1 1 to in factory set in setting mode 1 set the outdoor unit you want to give cool heat selection permission to as the group master and set the other outdoor units as group slave units set the outdoor unit external control adapter ss1 to both factory set or c h and ss2 to off factory set 119

To indoor unit 119

Multi outdoor units connection 120

P ds1 ds2 120

Set cool heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by cool heat switching remote control install the external control adapter for outdoor unit on either the outdoor outdoor indoor outdoor transmission line mount the cool heat selection remote control to the master outdoor unit for the unified control set the ds1 1 on the pc board of master outdoor unit to out in setting mode 1 set the outdoor unit you want to give cool heat selection permission to as the group master and set the other outdoor units as group slave units set the outdoor unit external control adapter ss1 to both factory set or c h and ss2 to off factory set 120

To indoor unit 120

Address setting for 121

Set lower 5 digits with binary number no to no 1 121

Supplementation on and when switching cool heat for each adapter pc board with the use of more than one adapter pc board set the address of the external control adapter for outdoor unit pc board ds1 and ds2 so that it matches the unified cool heat address of outdoor unit main pc board 121

Setting of low noise operation and demand operation 122

General information 117 123

Image of operation in the case of a 123

Image of operation in the case of a and b 123

Image of operation in the case of b 123

Sien34 705 test operation 123

A when the demand operation is carried out by external instructions with the use of the external control adapter for outdoor unit 1 while in setting mode 2 set the setting condition for set item no 12 setting of external low noise demand operation to yes 2 if necessary while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 124

B when the normal demand operation is carried out use of the external control adapter for outdoor unit is not required 1 while in setting mode 2 make setting of the set item no 32 setting of constant demand to on 2 while in setting mode 2 select the set item no 30 setting of demand 1 level and then set the setting condition to targeted mode 124

By connecting the external contact input to the demand input of the outdoor unit external control adapter optional the power consumption of unit operation can be saved suppressing the compressor operating condition 124

Setting of demand operation 124

General information 119 125

Image of operation in the case of a 125

Image of operation in the case of a and b 125

Image of operation in the case of b 125

Sien34 705 test operation 125

Detailed setting procedure of low noise operation and demand control 126

Setting of refrigerant recovery mode 128

Setting of vacuuming mode 128

Check operation detail 129

Check operation function 129

Caution for refrigerant leaks 130

Introduction 130

Maximum concentration level 130

Procedure for checking dangerous concentration 130

Step 2 131

Step 3 131

Step 4 132

Contract drawings 133

Equipment guarantees 133

Hand over to customer 133

Important points 133

It is essential to prepare a control wiring diagram which clarifies the refrigerant system and the control system 133

List of equipment which has been delivered 133

Names of those responsible for the work emergency contact address 133

Operational steps 133

Set of operation manuals 133

Appendix 134

Classifications of indoor unit environments reference data 134

Difference between catalogue data and actual noise 134

Notes 1 excluding bedrooms 2 reference values of faint noises in the place of usage 134

Operating noise differs depending on the place of measurement room because of the various degrees with which the room reverberates the sound to determine the amount of reverberation under uniform conditions the unit has been measured in a dead room with results having been compiled in the below table the actual sound produced in unit operation can be determined from table 1 134

Operating noise of indoor units 134

Sound pressure rise due to room reverberation higher than catalogue data 134

Calculating operating noise 135

Faint noises and correcting operating noise with respect to faint noises 135

Appendix sien34 705 136

General information 136

In the case of 2m or more 136

Piping installation point 136

Since there is a possibility that oil may be collected on a stop machine side install piping between outdoor units to go to level or go up to an outdoor unit and to make a slope 136

The projection part between multi connection piping kits 136

When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit in the case of 2m or less 136

Connection of 8 indoor units 138

Example of connection r 410a type 138

In case of multi outdoor system re read to the first outdoor unit multi connection piping kit as seen from the indoor unit 138

Indicate the outdoor unit multi connection piping kit 138

Branch with refnet joint 139

Example refrigerant branch using refnet joint 139

Branch with refnet joint and refnet header 140

Example refrigerant branch using refnet joint and refnet header 140

Branch with refnet header 141

Example refrigerant branch using refnet header 141

Choose the refnet joints other than that for the first branch from the following table in accordance with the total capacity index of all the indoor units connected below the refnet joint 142

Example in case of refnet joint b indoor units 7 8 example in case of refnet joint header indoor units 1 2 3 4 5 6 142

Example in the case of refnet header indoor units 1 2 3 4 5 6 7 8 142

Example of downstream indoor units 1 example in case of refnet joint c indoor units 3 4 5 6 7 8 142

How to select the refnet joint 142

Indoor units 1 8 142

Outdoor unit refnet joint c 142

Refnet joint b 142

Refrigerant branch kit selection 142

When using refnet joint at the first branch counted from the outdoor unit side choose from the following table in accordance with the outdoor unit capacity type example refnet joint a 142

200 khrp26m22h max 4 branch 200 143

C d e f g h 1 2 3 4 5 6 143

C d e f g h i b 1 2 3 4 5 6 7 8 143

General information 137 143

How to select the refnet header heat pump cooling only rx y q5 54p 50ph 143

Indoor unit total capacity index refrigerant branch kit name 143

Indoor units 1 8 143

K j 7 8 143

Khrp26m73h max 8 branch khrp26m73hp 143

Outdoor unit 143

Refnet header 143

Refnet joint b 143

Sien34 705 appendix 143

X 290 khrp26m33h max 8 branch 290 143

X 640 khrp26m72h max 8 branch see note 3 next page 640 143

Choose from the following table in accordance with the number of outdoor units 144

Heat pump 50hz 60hz cooling only 50hz 144

How to select the outdoor unit multi connection piping kit this is required when the system is multi outdoor unit system 144

Choose from the following table in accordance with the outdoor unit capacity type piping between outdoor unit multi connection piping kits part b piping between outdoor unit and outdoor unit multi connection piping kit part c choose from the following table in accordance with the total capacity type of all the outdoor units connected above outdoor unit multi connection piping kit unit mm 145

Heat pump 50hz 60hz cooling only 50hz rx y q5 54p 50ph 145

Pipe size selection 145

Piping between outdoor unit and first refrigerant branch kit 145

See 7 note 1 temper grade and wall thickness for pipes temper grade o type and 1 2h type indicate the material types specified in jis h 3300 unit mm 145

Piping between refrigerant branch kit and indoor unit match to the size of the connection piping on the indoor unit unit mm 146

Piping between refrigerant branch kits choose from the following table in accordance with the total capacity index of all the indoor units connected below this do not let the connection piping exceed the main refrigerant piping size unit mm 146

0 7 total length m of liquid piping size at ø22 0 6 total length m of liquid piping size at ø19 0 8 total length m of liquid piping size at ø15 0 2 total length m of liquid piping size at ø12 147

Heat pump 50hz 60hz cooling only 50hz rx y q5 54p 50ph 147

How to calculate the additional refrigerant to be charged 147

Indoor units 1 8 147

Outdoor unit 147

Refnet header 147

Refnet joint a b 147

Total length m of liquid piping size at ø6 147

Total length m of liquid piping size at ø9 147

Diameter of above case 148

Heat pump 50hz 60hz cooling only 50hz rx y q5 54p 50ph 148

Note 1 148

Size of main gas and liquid pipes and allowable length 148

General information 143 149

If the pipe size above the refnet header is φ 34 or more khrp26m73hp is required 149

Note 2 149

Note 3 149

Sien34 705 appendix 149

Appendix sien34 705 150

Fill the following record and put it on the back side of electrical board 150

General information 150

Record of field setting and additional refrigerant charge 150

Request for indication of setting contents additional refrigerant charging amount and installation date 150

2 or 3 outdoor units can be connected there are restrictions on the combination and the installation order of outdoor units so please refer to the engineering data of vrv iii and the installation manual attached sheet of outdoor unit for details 151

Bhfp 22 p100 151

Bhfp 22 p151 151

Bhfp22p100 151 151

Field supply parts 151

Gas side joint liquid side joint gas side reducer liquid side reducer 151

Insulation for piping connection piping 151

Kit name 151

Number of outdoor units connected outdoor unit multi connection piping kit 151

O type 1 2h type 151

Outdoor unit multi connection piping kit 151

Quantity and selection procedure of elbow only applies to a front or bottom connection for a lower front connection the quantity and selection procedure are different so please refer to the instructions for a lower front connection a joint for the same diameter pipes is needed only for a bottom connection see the instructions for the bottom connection for details on quantity and specifications the min thickness of the pipes in this manual shows the requirements of japanese high pressure gas control low as of jan 2003 and the temper grade o 1 2h shows the material type of jis h 3300 the tickness and material shall be selected in accordance with local for the design pressure 4 ompa 40bar unit mm 151

See the connecting pipe sizes and location of cutting the joint for details on the necessary size prepare a gas pipe diameter for the upper outdoor unit as listed in connecting pipe sieze and location of cutting the joint for insulation materials 151

Selection procedure 151

Temper grade copper tube o d copper tube w t 151

The following parts are needed to connect this kit and are not included 151

This kit contains the following parts 151

Units bhfp22p100 3 units bhfp22p151 151

Appendix sien34 705 152

Caution label 152

Caution label max 15 152

General information 152

Installation examples 152

Restrictions on installing multi connection piping kit 152

View view 152

When istalling this kit please apply the following restrictions to the piping installer 152

1 exterior view 153

2 finished dimensions 153

Bhfp22p100 installation instructions 153

Caution 153

Cutting procedure 153

General information 147 153

Installation examples 153

Procedure for front connection 153

Sien34 705 appendix 153

1 cutting the field supply gas pipes 154

2 connection of pipes 154

Appendix sien34 705 154

Connection of gas and liquid pipes 154

Cut the pipes according to table 1 154

General information 154

Table 2 table 1 154

This table shows the case when the a dimensions shown in 1 2 finished dimensions is 290 mm if the a dimensions exceed 290 mm see table 1 and adjust the dimensions of the gas pipe 1 and 2 the l dimensions of the gas pipe 2 in table 1 show those when the field supply elbows have b dimension in table 2 if the b dimension is not same with table 2 see table 1 and 2 and adjust them accordingly 154

Air tight test 155

Connection of piping between the outdoor unit and the indoor unit 155

Follow the instructions in the installation manual included with the outdoor unit when performing installation work 155

General information 149 155

Insulation of joints 155

Sien34 705 appendix 155

The work after the kit is connected 155

1 exterior view 156

2 finished dimensions 156

A standard installation has the following dimensions 156

Appendix sien34 705 156

General information 156

Installation examples 156

Outdoor unit a 156

Outdoor unit b 156

Prodecure for lower front connection 156

1 cutting the field supply gas pipe 1 to 4 157

2 connection of pipes 157

Air tight test 157

Caution 157

Connection of gas and liquid pipes 157

General information 151 157

Ground 157

Insulation of joints 157

Max 15 157

Sien34 705 appendix 157

Table 3 gas pipe 1 field supply gas pipe 2 field supply gas pipe 3 field supply gas pipe 4 field supply 157

The work after the kit is connected 157

1 cutting the field supply gas pipe 1 and 2 and the gas side accessory pipe 3 attached to the outdoor unit 158

1 exterior view 158

Appendix sien34 705 158

Caution 158

Connection of gas and liquid pipes 158

General information 158

Installation examples 158

Procedure for bottom connection 158

2 connection of pipes 159

Air tight test 159

Caution 159

General information 153 159

Ground 159

Insulation of joints 159

Max 15 159

Sien34 705 appendix 159

The work after the kit is connected 159

1 exterior view 160

2 finished dimension 160

Appendix sien34 705 160

Bhfp22p151 installation instructions 160

Bottom frame 160

Gas pipe liquid pipe 160

General information 160

Installation examples 160

Procedure for front connection 160

There are some restrictions on the interconnecting piping between the outdoor units see the installation manual attached to the outdoor 160

Units and make sure to carry out proper piping if the piping restrictions are not observed it may result in malfunction of the unit 160

Use pipe cutter for cutting 160

1 cutting the field supply gas pipes 161

2 connection of pipes 161

Air tight test 161

Caution 161

Connection of gas and liquid pipes 161

Gas pipe 1 field supply gas pipe 2 field supply gas pipe 3 field supply 161

General information 155 161

Ground 161

Insulation of joints 161

Max 15 161

Sien34 705 appendix 161

Table 6 161

The work after the kit is connected 161

1 cutting the field supply gas pipes 162

1 exterior view 1 2 finished dimensions 162

2 connection of pipes 162

Appendix sien34 705 162

Connection of gas and liquid pipes 162

General information 162

Installation examples 162

Procedure for front connection 162

Air tight test 163

Insulation of joints 163

The work after the kit is connected 163

1 exterior view 164

Appendix sien34 705 164

Caution 164

General information 164

Installation examples 164

Procedure for bottom connection 164

1 cutting the field supply gas pipe 1 and 2 and the gas side accessory pipe 3 attached to the outdoor unit 165

2 connection of pipes 165

Air tight test 165

Connection of gas and liquid pipes 165

General information 159 165

Insulation of joints 165

Sien34 705 appendix 165

The work after the kit is connected 165

Appendix sien34 705 166

General information 166

Khrp26a22t 166

Khrp26a33t 166

Khrp26a72t 166

Khrp26a73t 166

Refnet joint and header 166

Refnet joint branch kit 166

Gas side liquid side 167

General information 161 167

Khrp26m22h 167

Khrp26m33h 167

Khrp26m72h 167

Khrp26m73h 167

Refnet header branch kit 167

Sien34 705 appendix 167

Installation procedure 168

Pipe size reduce 168

Reducer 168

Branch pipes must be insulated in accordance with the handbook which comes with each kit 169

For gas and liquid branch pipes 169

General information 163 169

Make sure that all branch pipes are fitted such that they branch either horizontally or vertically 169

Refnet header 169

Refnet joints 169

Refnet joints and headers 169

Sien34 705 appendix 169

When the size of the selected field piping is different from that of branch pipe then the connecting section should be cut with a pipe cutter as shown in the figure below 169

When you are cutting an inlet or outlet pipe with a pipe cutter make sure that you make the cut in the center of the connection area 169

General information 165 171

Sien34 705 appendix 171

Vrv inspection sheet 171

Air filter visual inspection no clogging or damage 172

Appendix sien34 705 172

Before turning on the power 172

Breaker capacity visual inspection specified capacity g ng 172

Compressor electrical insulation 172

Fan motor electrical insulation 172

Gas detector no leaks g ng 172

General information 172

Heat exchanger visual inspection 172

Heat exchanger visual inspection no clogging or damage 172

Indoor unit 172

Inspection item 172

Inspection method 172

Installation visual inspection short circuit etc g ng 172

Inv m ω std1 m ω std2 m ω 172

M ω or more 172

M ω or more m ω 172

Outdoor unit 1 172

Outdoor unit 2 outdoor unit 3 172

Refrigerant system gas detector no leaks 172

Screwdriver etc no looseness g ng 172

Standard guideline measurement values 172

System name 172

V megatester 172

Auxiliary heater electrical insulation 500 v megatester 1 m ω or more 173

Decision 173

Fan motor electrical insulation 500 v megatester 1 m ω or more 173

General information 167 173

Indoor unit 173

Inspection item 173

Inspection method 173

Installation visual inspection short circuit etc 173

Sien34 705 appendix 173

Standard guideline measurement values 173

Appendix sien34 705 174

During operation 174

General information 174

Outdoor unit 1 174

Outdoor unit 2 174

Outdoor unit 3 174

System name 174

13 c when cooling 15 20 c when heating 175

Discharge air temperature 175

During operation 175

Fan noise vibration listening no noise or vibration 175

Fan operating current clamp meter 175

Fan rotation direction visual inspection forward rotation 175

General information 169 175

Indoor unit 175

Inspection item 175

Inspection method 175

Powerly supply voltage tester rated voltage 10 175

Sien34 705 appendix 175

Standard guideline measurement values 175

Suction air temperature 175

System name 175

Thermometer 175

Thermometer differential 175

Appendix sien34 705 176

General information 176

Heat pump cooling only 50hz 176

Outdoor unit 176

Piping system diagrams 176

Rxyq5py1 rxq5py1 176

General information 171 177

Rxyq8py1 rxq8py1 177

Sien34 705 appendix 177

Stop valve with service port ø 7 mm flare connection 177

Appendix sien34 705 178

General information 178

Rxyq10py1 rxyq12py1 rxq10py1 rxq12py1 178

Stop valve with service port ø7 mm flare connection 178

General information 173 179

Rxyq14py1 rxyq16py1 rxyq18py1 rxq14py1 rxq16py1 rxq18py1 179

Sien34 705 appendix 179

Stop valve with service port ø7 mm flare connection 179

Appendix sien34 705 180

D055764a 180

General information 180

Heat pump 60hz 180

Rxyq5pyl 180

D055765a 181

General information 175 181

Rxyq8pyl 181

Sien34 705 appendix 181

Appendix sien34 705 182

D055766b 182

General information 182

Rxyq10pyl rxyq12pyl 182

D050785a 183

General information 177 183

Rxyq14pyl rxyq16pyl rxyq18pyl 183

Sien34 705 appendix 183

Electronic expansion valve 184

Filter filter 184

Flare connectio 184

Flare connection 184

Fxcq fxfq fxkq fxsq fxmq fxhq fxaq fxlq fxnq 184

Gas piping connection port 184

Heat exchanger 184

Indoor unit 184

Liquid piping connection port 184

Φ 15 or less attached piping above φ 19 184

General information 179 185

Mm model gas liquid fxzq20m 25m 32m 40m 50m φ 12 φ 6 185

Refrigerant pipe connection port diameters 185

Sien34 705 appendix 185

Electronic expansion valve 186

Filter filter 186

Fxmq125mf 200mf 250mfv1 186

Gas side 186

Liquid side 186

Refrigerant pipe connection port diameters 186

Connection unit 187

Fxuq bevq 187

Indoor unit 187

Appendix sien34 705 188

General information 188

Heat pump 50hz 60hz outdoor unit 188

Rxyq5py1 rxyq5pyl 188

Wiring diagrams heat pump 50hz 60hz cooling only 50hz 188

Cool heat selector 189

D050454j 189

General information 183 189

Rxyq8py1 rxyq8pyl 189

Sien34 705 appendix 189

Appendix sien34 705 190

D050455h 190

General information 190

Rxyq10py1 rxyq10pyl 190

T1a v1cp v1r v2r x1a x2a x1m x1m x1m y1e y2e y1s y2s y3s z1c 5c z1f 190

D051890g 191

General information 185 191

Rxyq12py1 rxyq12pyl 191

Sien34 705 appendix 191

Appendix sien34 705 192

D050456h 192

General information 192

Rxyq14py1 rxyq16py1 rxyq18py1 rxyq14pyl rxyq16pyl rxyq18pyl 192

Cooling only outdoor unit 193

D055257a 193

General information 187 193

Rxq5py1 193

Sien34 705 appendix 193

Appendix sien34 705 194

D055258a 194

General information 194

Rxq8py1 194

S1ph v1cp v1r v2r x1a x2a x1m x1m y1e y2e y1s y2s y3s z1c 5c z1f 194

D055259a 195

General information 189 195

Rxq10py1 195

Sien34 705 appendix 195

T1a v1cp v1r v2r x1a x2a x1m x1m y1e y2e y1s y2s y3s z1c 7c z1f 195

Appendix sien34 705 196

D055260a 196

General information 196

Rxq12py1 196

T1a v1cp v1r v2r x1a 4a x1m x1m y1e y2e y1s y2s y3s 196

D055261a 197

General information 191 197

Rxq14py1 rxq16py1 rxq18py1 197

Sien34 705 appendix 197

T1a v1cp v1r v2r x1a 4a x1m x1m y1e y2e y1s y2s y3s 197

Appendix sien34 705 198

Field wiring heat pump cooling only 50hz 60hz 198

General information 198

Indoor units 198

Outdoor units 198

Rx y q5p 8p 10p 12p 14p 16p 18py1 rxyq5p 8p 10p 12p 14p 16p 18pyl 198

General information 193 199

Rx y q20p 22p 24p 26p 28p 30p 32p 34p 36py1 rxyq20p 22p 24p 26p 28p 30p 32p 34p 36pyl 199

Sien34 705 appendix 199

When the power source is supplied to each outdoor unit individually 199

When the source is connected in series between the units 199

Appendix sien34 705 200

General information 200

Rx y q38p 40p 42p 44p 46p 48p 50p 52p 54py1 rxyq238p 40p 42p 44p 46p 48p 50p 52p 54pyl 200

When the power source is connected in series between the units 200

When the power source is supplied to each outdoor unit individually 200

Bad examples and good examples in installation 201

Example 1 signal interference due to use of multiple core cable all model 201

Main points 201

Situation 201

Source of problem and remedial action 201

Appendix sien34 705 202

Example 2 mismatch between cables connecting indoor and outdoor units and corresponding piping all model 202

General information 202

Main points 202

Situation 202

Source of problem and remedial action 202

Special care must be taken when the pipework and cabling are carried out by different people run each indoor unit in turn to check that the system is correctly matched 202

The connecting cables and the corresponding piping were not correctly matched recabling was carried out and the fault disappeared 202

The remote control is not showing any malfunction and the system is operating but there is no flow of warm air from the indoor unit in heating mode 202

Example 3 drain pipe trap shape defective 203

Main points 203

Situation 203

Source of problem and remedial action 203

Example 4 pressure down despite absence of leaks during air tight test all model 204

Main points 204

Situation 204

Source of problem and remedial action 204

Example 5 excessive noise due to incorrect angling of refnet joints 205

Main points 205

Situation 205

Source of problem and remedial action 205

Example 6 cracks develop in field pipes due to thermal expansion and contraction 206

For your reference 206

Main points 206

Remedial action 206

Situation 206

Cause and remedial action 207

Example 7 transmission wiring between the cool heat selector and the outdoor unit is too close to a high voltage wire 207

Example 8 the centralized control group number cannot be set inverter k series 207

Main points 207

Remedial action 207

Situation 207

Example 9 88 cannot be cleared from the central remote control 208

Main points 208

Remedial action 208

Situation 208

A malfunction f6 overcharge of refrigerant is displayed when a check operation is executed as a test operation under the condition of low outdoor temperature in the winter season 209

Applicable models 209

Be sure to execute a check operation with the front panel closed or misjudgment is made even if the outdoor temperature is low 209

Condition 209

Due to temporary refrigerant mixing into refrigerating oil misjudgment is made when a check operation is executed under the condition of low outdoor temperature 209

Malfunction f6 is displayed during check operation in the winter season 209

Measure 209

P vrv iii series 209

Point of diagnosis 209

Rx y q 209

The condition completes by executing the check operation again 209

Applicable models 210

Condition 210

Led display for master slave judgment malfunctions at the time of test operation 210

Measure 210

Point of diagnosis 210

Applicable models 211

Cautions for demand control with externally controlled adapter 211

Cautions for test operation 211

Condition 211

Measure 211

Point of diagnosis 211

Applicable models 212

Condition 212

Inferior insulation of the compressor before test operation 212

Measure 212

No heating operation is available though cooling operation is possible fan only operation continues with no malfunction displayed 212

Point of diagnosis 212

Applicable models 213

Condition 213

Cooling operation of specific indoor units is not good 213

Measure 213

Point of diagnosis 213

Applicable models 214

Condition 214

Malfunction heating due to overcharge of refrigerant 214

Measure 214

Point of diagnosis 214

Applicable models 215

Condition 215

High pressure shutdown occurs only when the std compressor starts 215

Measure 215

Point of diagnosis 215

Malfunction of transmission examples 216

Malfunction of transmission examples display of malfunction of transmission due to the elevator s power line 216

Malfunction of transmission examples malfunction of transmission due to wiring next to the high voltage line for indoor unit 216

Malfunction of transmission examples faulty condition caused by the use of single core line 217

Malfunction of transmission examples faulty condition to multi core wire 217

Malfunction of transmission examples faulty condition caused by branch lines 218

Heat pump 60hz rxyq5 54p 60 219

Heat pump cooling only 50hz rx y q5 54p 14 219

Part 2 installation manual 219

Heat pump cooling only 50hz rx y q5 54p 220

Installation manual 220

Pn08043 2 em06a045 220

System air conditioner 220

First of all 221

Safety considerations 221

Disposal requirements 223

Special notice of product 223

Combination 224

Introduction 224

10 14 16 hp type 226

10 hp type 12 18 hp type 226

18 hp type 226

Note do not throw away any of the accessories until installation is complete 226

Standard supplied accessories 226

The capacities of outdoor units a b and c must fulfill the following conditions a b c 226

The following accessories are included the storage location of the accessories is shown in figure 1 226

Figure 2 shows the installation process install in the order of the steps shown 227

For main components and function of the main components refer to the engineering data book 227

Installation process 227

Main components 227

Note make sure that any separately purchased accessories are designed for use with r 410a 227

Option accessory 227

Outdoor unit multi connection piping kit 227

Pipe size reducer 227

Refer to the engineering data book for the complete list of specifications 227

Refrigerant branching kit 227

Technical and electrical specifications 227

To install the outdoor units the following optional parts are also required to select an optimum kit refer to 6 refrigerant piping 227

Figure 3 228

Heat pump cooling only 50hz rx y q5 54p sien34 705 228

Installation manual 228

Installation space examples the installation space requirement shown in figure 3 is a reference for cooling operation when the outdoor temperature is 35 c if the design outdoor temperature exceeds 35 c or the heat load exceeds maximum capacity in all the outdoor unit take an even large space on the intake shown in figure 3 during installation install the units using the most appropriate of the patterns shown in figure 3 for the location in question taking into consideration human traffic and wind if the number of units installed is more than that shown in the pattern in figure 3 install the units so there are no short circuits as regards space in front of the unit consider the space needed for the local refrigerant piping when installing the units if the work conditions in figure 3 do not apply contact your dealer or daikin directly 228

No limit to wall height 228

Pattern 1 228

Pattern 2 228

Pattern 3 228

Select a location for installation that meets the following conditions get the customer s permission 1 there is no danger of fire due to leakage of inflammable gas 2 select the location of the unit in such a way that neither the discharged air nor the sound generated by the unit disturb anyone 3 the foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation 4 the piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length refer to 1 6 refrigerant piping 5 locations where the unit s suction vent and outlet vent do not generally face the wind wind blowing directly into the suction or outlet vents will interfere with the unit s operation if necessary install some kind of obstruction to block the wind 6 the space around the unit is adequate for servicing and the minimum space for air inlet and air outlet is available see the installation space examples for the minimum space requirem 228

Selection of location 228

Service space of front side 228

Service space of suction side 228

When installed in serial 228

Inspecting and handling the unit 230

Placing the unit 231

For piping work follow the maximum tolerated length difference in height and length after a branch indicated in the 1 6 5 example of connection a refrigerant branching kit sold separately is needed for piping branches and connection of piping between outdoor unit in case of multi system use only separately sold items selected specifically according to the refrigerant branch kit selection in the 1 6 5 example of connection 232

Note all field piping must be installed by a licensed refrigeration technician and must comply with relevant local and national regulations after piping work is complete do not under any circumstances open the shutoff valve until 1 7 field wiring and 1 10 checking of device and installation conditions are complete do not use flux when brazing the refrigerant piping use the phosphor copper brazing filler metal bcup 2 jis z 3264 b cu93p 710 795 iso 3677 which does not require flux flux has extremely harmful influence on refrigerant piping systems for instance if the chlorine based flux is used it will cause pipe corrosion or in particular if the flux contains fluorine it will damage the refrigerant oil 232

Note exercise special caution to prevent dirt or dust when passing piping through holes in walls and when passing pipe edges to the exterior 232

Protect the piping to prevent moisture dirt dust etc from entering the piping 232

Protection against contamination when installing pipes 232

Refrigerant piping 232

Selection of piping material and refrigerant branching kit 232

Use only pipes which are clean inside and outside and which do not accumulate harmful sulfur oxidants dirt cutting oils moisture or other contamination foreign materials inside pipes including oils for fabrication must be 30mg 10m or less use the following items for the refrigerant piping material jointless phosphor deoxidized copper pipe size see 1 6 5 example of connection to determine the correct size thickness select a thickness for the refrigerant piping which complies with national and local laws for r 410a the design pressure is 4 mpa 40 bar the minimum thickness of piping according to japan s high pressure gas safety law as of january 2003 is shown below temper grade o type 1 2h type in the table indicate the material types specified in jis h 3300 232

Connecting the refrigerant piping 233

Pipe connection 233

Caution after removing the gas remove the pinch piping any gas remaining inside may blow off the pinch piping when you dissolve the brazing causing damage 234

Figure 13 234

Figure 14 234

Heat pump cooling only 50hz rx y q5 54p sien34 705 234

Installation manual 234

Pinch piping 234

Procedure 1 confirm the shutoff valve is closed 234

Procedure 2 connect a charge hose to the service port of the liquid side and gas side shutoff valves and remove the gas from the pinch piping 234

Procedure 3 after removing the gas from the pinch piping dissolve the brazing using a burner and remove the pinch piping 234

Removing pinch piping when connecting refrigerant piping to an outdoor unit remove the pinch piping refer to figure 13 pinch piping should be removed using the procedure in the figure 13 234

Shutoff valve liquid side gas side service port 234

Processing the gas side accessory pipe 2 only in case of connecting at lateral side cut the gas side accessory pipe 2 referring the figure below 235

Figure 15 236

Heat pump cooling only 50hz rx y q5 54p sien34 705 236

Installation manual 236

The 5hp type cannot be used as an independent unit in a multi system the outdoor unit multi connection piping kit sold separately is needed when connecting piping between outdoor units refer to the installation manual that comes with the kit when doing this piping work 236

Installation manual 231 237

Pattern 1 237

Pattern 2 237

Precautions when connecting piping between outdoor units in case of multi system the outdoor unit multi connection piping kit sold separately is needed to connect piping between outdoor units in multi system only proceed with piping work after considering the limitations on installation listed here and in 5 branching the refrigerant piping always referring to the kit s installation manual 1 the piping between outdoor units must be installed level pattern 1 or with a rise pattern 2 otherwise oil may pool in the pipes 237

Prohibited pattern 237

Sien34 705 heat pump cooling only 50hz rx y q5 54p 237

2 to avoid the risk of oil detention in the stopping unit always connect the shutoff valve and the piping between outdoor units as shown in the figure a or figure b 238

3 if the piping length between the outdoor units exceeds 2 m create a rise of 200 mm or more in the gas line under a length of 2 m from the outdoor unit multi connection piping kit 238

Heat pump cooling only 50hz rx y q5 54p sien34 705 238

If 2 m or more 238

If less than 2m 238

Installation manual 238

Prohibited pattern 238

Example of connection 240

Example refrigerant branch using refnet joint 240

Heat pump cooling only 50hz rx y q5 54p sien34 705 240

How to calculate the additional refrigerant to be charged 240

Installation manual 240

Onnectio 240

Pipe size selection 240

Refrigerant branch kit selection 240

Xample o 240

Example refrigerant branch using refnet header 241

Example refrigerant branch using refnet joint and refnet header 241

Installation manual 235 241

Sien34 705 heat pump cooling only 50hz rx y q5 54p 241

Diameter of above case 242

For calculation of total extension length the actual 242

Length of above pipes must be doubled except 242

Main pipe and the pipes that are not increased 242

Note 1 242

Note 2 242

Note 3 242

Gas liquid 243

Indoor units 1 8 243

Outdoor unit refnet joint a g 243

Φ 38 φ 22 243

Field wiring 244

A power circuit see the following table must be provided for connection of the unit this circuit must be protected with the required safety devices i e a main switch a slow blow fuse on each phase and an earth leakage circuit breaker when using residual current operated circuit breakers be sure to use a high speed type 1 second or less 200ma rated residual operating current use copper conductors only use insulated wire for the power cord select the power supply cable type and size in accordance with relevant local and national regulations specifications for local wiring are in compliance with iec60245 use wire type h05vv when protected pipes are used use wire type h07rn f when protected pipes are not used 245

Note the above table indicates power specifications for standard combinations see 1 2 introduction if using anything other than the above combinations in a multi system calculate using the following procedure minimum circuit amp value add the minimum circuit amp values for each independent unit recommended fuse capacity select the fuse capacity with the next higher value of the calculated minimum circuit amp multiplied by 1 ex combining the rxyq30py1 using rxyq8py1 rxyq10py1 and rxyq12py1 minimum circuit amp of the rxyq8py1 in table above 18 a minimum circuit amp of rxyq10py1 in table above 21 a minimum circuit amp of rxyq12py1 in table above 22 a accordingly the minimum circuit amp of the rxyq30py1 18 21 22 62 a multiplying the result above by 1 62 1 69 a so the recommended fuse capacity would be 70 a 245

Power circuit safety device and cable requirements 245

Leading wire procedure 246

Wiring connection example for whole system 246

Referring to figure 21 22 connect the transmission wiring between outdoor unit and indoor unit outdoor unit and outdoor unit of other system outdoor unit and outdoor unit of same system only multi system or to cool heat selector except rxq p 247

Transmission wiring connection procedure 247

All transmission wiring is to be procured on site all wiring should use sheathed vinyl cord 0 5 1 5 m 248

Between outdoor unit and outdoor unit of same system only for multi system max wiring length 30 m 3 transmission wiring to cool heat selector max wiring length 500 m 248

Figure 23 248

Heat pump cooling only 50hz rx y q5 54p sien34 705 248

Installation manual 248

Or cable duplex triplex only for the cool heat selector transmission wiring about the symbol 1 3 see figure 21 22 should be done within the following limitations if they are exceeded transmission problems may occur 1 between outdoor unit and indoor unit between outdoor unit and outdoor unit of other systems max wiring length 1 000 m max total wiring length 2 000 m max no of branches 16 note no branch is allowed after branch see figure 23 max no of outdoor units of other system that can be connected 10 248

Power wiring connection procedure 249

Caution the transmission wiring must be at least 50 mm away from the power wiring make sure all wiring do not contact to the pipes hatching parts in the figure 27 after wiring work is completed check to make sure there are no loose connections among the electrical parts in the el compo box 251

Figure 27 251

In case of 12 18hp type 251

In case of 5 10hp type 251

Installation manual 245 251

Procedure for wiring inside units 251

Referring to figure 27 secure and wire the power and transmission wiring using the included clamp 1 2 and 3 251

Sien34 705 heat pump cooling only 50hz rx y q5 54p 251

Air tight test and vacuum drying 252

Note always use nitrogen gas for the airtightness test absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 252

Note the airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right see shutoff valve operation procedure in 1 11 1 before working for details on handling the shutoff valve the refrigerant charge port is connected to unit pipe when shipped the unit contains the refrigerant so use caution when attaching the charge hose 252

Preparations 252

Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit the refrigerant tank and the charge hose connection to refrigerant charge port or the valve a c in figure 28 are needed in 1 11 additional refrigerant charge and check operation the shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 252

Air tight test and vacuum drying method 253

Pipe insulation 254

Checking of device and installation conditions 255

About the refrigerant tank check whether the tank has a siphon pipe before charging and place the tank so that the refrigerant is charged in liquid form see the figure below 256

Additional refrigerant charge and check operation 256

Before working 256

Caution always use the proper refrigerant r 410a if charged with the refrigerant containing an improper material it may cause an explosion or accident r 410a is a mixed refrigerant so charging it as a gas will cause the refrigerant composition to change which may prevent normal operation 256

Gas side shutoff valve φ 15 φ 19 256

Heat pump cooling only 50hz rx y q5 54p sien34 705 256

Hp type 8hp type 10hp type 12hp type 14hp type 16hp type 18hp type 256

Installation manual 256

Liquid side shutoff valve 256

Note do not open the shutoff valve until 1 10 checking of device and installation conditions are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation be sure to use the correct tools the shutoff valve is not a back seat type if forced it to open it might break the valve body when using a service port use the charge hose after tightening the cap make sure no refrigerant gas is leaking 256

Other tanks 256

Shutoff valve operation procedure when operating the shutoff valve follow the procedure instructed below 256

The outdoor unit is charged with refrigerant when shipped from the factory but depending on the size and length of the piping when installed it may require additional charging for charging the additional refrigerant follow the procedure in this chapter and then carry out the check operation 256

Tightening torque the sizes of the shutoff valves on each model and the tightening torque for each size are listed in the table below 256

With siphon pipe 256

Φ 12 the 18hp type corresponds to the 15 diameter onsite piping using the accessory pipe 256

Φ 25 the 10hp type corresponds to the 22 diameter onsite piping using the accessory pipe the 12 18hp type corresponds to the 28 diameter onsite piping using the accessory pipe 256

Φ 9 the 12hp type corresponds to the 12 diameter onsite piping using the included piping 256

Caution make sure to use the protect tool protective groves and goggles when charging the refrigerant due to a danger of liquid hammer the refrigerant must not be charged over the allowable maximum amount when charging the refrigerant do not perform the refrigerant charging operation under working for the indoor unit when opening the front panel make sure to take caution to the fan rotation during the working after the outdoor unit stops operating the fan may keep rotation for a while 258

How to check how many units are connected it is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pc board a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 258

Note if operation is performed within 12 minutes after the indoor and outdoor units are turned on h2p will be lit on and the compressor will not operate in order to ensure uniform refrigerant distribution it may take up to around 10 minutes for the compressor to start up after the unit starting operating this is not a malfunction 258

Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 default 258

Procedure of adding refrigerant charging and check operation 258

Warning electric shock warning make sure to close the el compo box lid before turning on the power when performing the refrigerant charging operation perform the setting on the pc board a1p of the outdoor unit and check the led display after the power is on via the inspection door which is in the el compo box lid use an insulated rod to operate the push buttons via the el compo box s inspection door there is a risk of electric shock if you touch any live parts since this operation must be performed with the power on 258

Display of normal system 260

Led display 3 off 4 on 5 blinking how to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 260

Note the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db 6kg at 0 c db if you need to speedup in case of multi system connect the refrigerant tanks to each outdoor unit as shown in the figure 33 260

Perform the refrigerant charging operation following refrigerant charging operation procedure as shown below and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit incase of multi system master unit are use see the figure 32 in addition the refrigerant are charged from the refrigerant charge port via the valve a see the figure 33 for operating the push button and opening and closing the valve follow the work procedure 260

Refrigerant charging operation procedure 1 open the liquid and gas side shutoff valves the valve a c must be closed the valve a c means the valves in the figure 33 260

3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 262

4 make the onsite settings as needed using the push button bs1 bs5 on the outdoor unit pc board a1p with the power on see 1 12 2 onsite settings with the power on 5 perform the check operation following the check operation method of the service precautions label on the el compo box lid the system operation for about 40 minutes and automatically stops the check operation if the malfunction code is not displayed in the remote control after the system stop check operation is completed normal operation will be possible after 5 minutes if the malfunction code is displayed in the remote control correct the malfunction following remote control displays malfunction code and perform the check operation again 262

If any malfunction codes other than the above are displayed check the service manual for how to respond 262

Led display 3 off 4 on 5 blinking how to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 262

Method 1 by the h8p multi led display 262

Method 2 by the transmission wiring to indoor unit 262

Remote control displays malfunction code 262

Onsite settings 263

Onsite settings with the power off 263

Onsite settings with the power on 263

Before test run 264

Checks after test run 264

Test run 264

Caution for refrigerant leaks 265

Heat pump 60hz rxyq5 54p 267

Installation manual 267

P171361 7j em06a035 267

System air conditioner 267

First of all 268

Safety considerations 268

Disposal requirements 270

Special notice of product 270

Combination 271

Introduction 271

10 14 16 hp type 273

10 hp type 12 18 hp type 273

18 hp type 273

Note do not throw away any of the accessories until installation is complete 273

Note make sure that any separately purchased accessories are designed for use with r 410a 273

Option accessory 273

Outdoor unit multi connection piping kit 273

Pipe size reducer 273

Refrigerant branching kit 273

Standard supplied accessories 273

The following accessories are included the storage location of the accessories is shown in figure 1 273

To install the outdoor units the following optional parts are also required to select an optimum kit refer to 2 6 refrigerant piping 273

Figure 2 shows the installation process install in the order of the steps shown 274

For main components and function of the main components refer to the engineering data book 274

Heat pump 60hz rxyq5 54p sien34 705 274

Installation manual 274

Installation process 274

Main components 274

Refer to the engineering data book for the complete list of specifications 274

Technical and electrical specifications 274

Figure 3 275

Installation manual 269 275

Installation space examples the installation space requirement shown in figure 3 is a reference for cooling operation when the outdoor temperature is 35 c if the design outdoor temperature exceeds 35 c or the heat load exceeds maximum capacity in all the outdoor unit take an even large space on the intake shown in figure 3 during installation install the units using the most appropriate of the patterns shown in figure 3 for the location in question taking into consideration human traffic and wind if the number of units installed is more than that shown in the pattern in figure 3 install the units so there are no short circuits as regards space in front of the unit consider the space needed for the local refrigerant piping when installing the units if the work conditions in figure 3 do not apply contact your dealer or daikin directly 275

No limit to wall height 275

Pattern 1 275

Pattern 2 275

Pattern 3 275

Select a location for installation that meets the following conditions get the customer s permission 1 there is no danger of fire due to leakage of inflammable gas 2 select the location of the unit in such a way that neither the discharged air nor the sound generated by the unit disturb anyone 3 the foundation is strong enough to support the weight of the unit and the floor is flat to prevent vibration and noise generation 4 the piping length between the outdoor unit and the indoor unit may not exceed the allowable piping length refer to 2 6 refrigerant piping 5 locations where the unit s suction vent and outlet vent do not generally face the wind wind blowing directly into the suction or outlet vents will interfere with the unit s operation if necessary install some kind of obstruction to block the wind 6 the space around the unit is adequate for servicing and the minimum space for air inlet and air outlet is available see the installation space examples for the minimum space requirem 275

Selection of location 275

Service space of front side 275

Service space of suction side 275

Sien34 705 heat pump 60hz rxyq5 54p 275

When installed in serial 275

Inspecting and handling the unit 277

Placing the unit 278

For piping work follow the maximum tolerated length difference in height and length after a branch indicated in the 2 6 5 example of connection a refrigerant branching kit sold separately is needed for piping branches and connection of piping between outdoor unit in case of multi system use only separately sold items selected specifically according to the refrigerant branch kit selection in the 2 6 5 example of connection 279

Note all field piping must be installed by a licensed refrigeration technician and must comply with relevant local and national regulations after piping work is complete do not under any circumstances open the shutoff valve until 2 7 field wiring and 2 10 checking of device and installation conditions are complete do not use flux when brazing the refrigerant piping use the phosphor copper brazing filler metal bcup 2 jis z 3264 b cu93p 710 795 iso 3677 which does not require flux flux has extremely harmful influence on refrigerant piping systems for instance if the chlorine based flux is used it will cause pipe corrosion or in particular if the flux contains fluorine it will damage the refrigerant oil 279

Note exercise special caution to prevent dirt or dust when passing piping through holes in walls and when passing pipe edges to the exterior 279

Protect the piping to prevent moisture dirt dust etc from entering the piping 279

Protection against contamination when installing pipes 279

Refrigerant piping 279

Selection of piping material and refrigerant branching kit 279

Use only pipes which are clean inside and outside and which do not accumulate harmful sulfur oxidants dirt cutting oils moisture or other contamination foreign materials inside pipes including oils for fabrication must be 30mg 10m or less use the following items for the refrigerant piping material jointless phosphor deoxidized copper pipe size see 2 6 5 example of connection to determine the correct size thickness select a thickness for the refrigerant piping which complies with national and local laws for r 410a the design pressure is 4 mpa 40 bar the minimum thickness of piping according to japan s high pressure gas safety law as of january 2003 is shown below temper grade o type 1 2h type in the table indicate the material types specified in jis h 3300 279

Connecting the refrigerant piping 280

Pipe connection 280

Caution after removing the gas remove the pinch piping any gas remaining inside may blow off the pinch piping when you dissolve the brazing causing damage 281

Figure 13 281

Figure 14 281

Installation manual 275 281

Pinch piping 281

Procedure 1 confirm the shutoff valve is closed 281

Procedure 2 connect a charge hose to the service port of the liquid side and gas side shutoff valves and remove the gas from the pinch piping 281

Procedure 3 after removing the gas from the pinch piping dissolve the brazing using a burner and remove the pinch piping 281

Removing pinch piping when connecting refrigerant piping to an outdoor unit remove the pinch piping refer to figure 13 pinch piping should be removed using the procedure in the figure 13 281

Shutoff valve liquid side gas side service port 281

Sien34 705 heat pump 60hz rxyq5 54p 281

Processing the gas side accessory pipe 2 only in case of connecting at lateral side cut the gas side accessory pipe 2 referring the figure below 282

Figure 15 283

Installation manual 277 283

Sien34 705 heat pump 60hz rxyq5 54p 283

The 5hp type cannot be used as an independent unit in a multi system the outdoor unit multi connection piping kit sold separately is needed when connecting piping between outdoor units refer to the installation manual that comes with the kit when doing this piping work 283

When connecting the piping on site be sure to use the accessory piping make sure the onsite piping does not come into contact with other piping or the bottom frame or side panels of the unit 283

Heat pump 60hz rxyq5 54p sien34 705 284

Installation manual 284

Pattern 1 284

Pattern 2 284

Precautions when connecting piping between outdoor units in case of multi system the outdoor unit multi connection piping kit sold separately is needed to connect piping between outdoor units in multi system only proceed with piping work after considering the limitations on installation listed here and in 5 branching the refrigerant piping always referring to the kit s installation manual 1 the piping between outdoor units must be installed level pattern 1 or with a rise pattern 2 otherwise oil may pool in the pipes 284

Prohibited pattern 284

2 to avoid the risk of oil detention in the stopping unit always connect the shutoff valve and the piping between outdoor units as shown in the figure a or figure b 285

3 if the piping length between the outdoor units exceeds 2 m create a rise of 200 mm or more in the gas line under a length of 2 m from the outdoor unit multi connection piping kit 285

If 2 m or more 285

If less than 2m 285

Installation manual 279 285

Prohibited pattern 285

Sien34 705 heat pump 60hz rxyq5 54p 285

Example of connection 288

Example refrigerant branch using refnet joint 288

Heat pump 60hz rxyq5 54p sien34 705 288

How to calculate the additional refrigerant to be charged 288

Installation manual 288

Onnectio 288

Pipe size selection 288

Refrigerant branch kit selection 288

Xample o 288

Example refrigerant branch using refnet header 289

Example refrigerant branch using refnet joint and refnet header 289

Installation manual 283 289

Sien34 705 heat pump 60hz rxyq5 54p 289

Diameter of above case 290

For calculation of total extension length the actual 290

Length of above pipes must be doubled except 290

Main pipe and the pipes that are not increased 290

Note 1 290

Note 2 290

Note 3 290

F 2 g 2 291

Gas liquid 291

Indoor units 1 8 291

Outdoor unit refnet joint a g 291

Φ 38 φ 22 291

Field wiring 293

A power circuit see the following table must be provided for connection of the unit this circuit must be protected with the required safety devices i e a main switch a slow blow fuse on each phase and an earth leakage circuit breaker when using residual current operated circuit breakers be sure to use a high speed type 1 second or less 200ma rated residual operating current use copper conductors only use insulated wire for the power cord select the power supply cable type and size in accordance with relevant local and national regulations specifications for local wiring are in compliance with iec60245 use wire type h05vv when protected pipes are used use wire type h07rn f when protected pipes are not used 294

Note the above table indicates power specifications for standard combinations see 2 2 introduction if using anything other than the above combinations in a multi system calculate using the following procedure minimum circuit amp value add the minimum circuit amp values for each independent unit recommended fuse capacity select the fuse capacity with the next higher value of the calculated minimum circuit amp multiplied by 1 ex combining the rxyq30pyl using rxyq8pyl rxyq10pyl and rxyq12pyl minimum circuit amp of the rxyq8pyl in table above 18 a minimum circuit amp of rxyq10pyl in table above 22 a minimum circuit amp of rxyq12pyl in table above 23 a accordingly the minimum circuit amp of the rxyq30pyl 18 22 23 65 a multiplying the result above by 1 65 1 71 a so the recommended fuse capacity would be 80 a 294

Power circuit safety device and cable requirements 294

Leading wire procedure 295

Wiring connection example for whole system 295

Referring to figure 21 22 connect the transmission wiring between outdoor unit and indoor unit outdoor unit and outdoor unit of other system outdoor unit and outdoor unit of same system only multi system or to cool heat selector 296

Transmission wiring connection procedure 296

All transmission wiring is to be procured on site all wiring should use sheathed vinyl cord 0 5 1 5 mm2 or cable duplex triplex only for the cool heat selector transmission wiring about the symbol 1 3 see figure 21 22 should be done within the following limitations if they are exceeded transmission problems may occur 1 between outdoor unit and indoor unit between outdoor unit and outdoor unit of other systems max wiring length 1 000 m max total wiring length 2 000 m max no of branches 16 note no branch is allowed after branch see figure 23 max no of outdoor units of other system that can be connected 10 297

Between outdoor unit and outdoor unit of same system only for multi system max wiring length 30 m 3 transmission wiring to cool heat selector max wiring length 500 m 297

Figure 23 297

Heat pump 60hz rxyq5 54p sien34 705 297

Installation manual 297

Power wiring connection procedure 298

Caution the transmission wiring must be at least 50 mm away from the power wiring make sure all wiring do not contact to the pipes hatching parts in the figure 27 after wiring work is completed check to make sure there are no loose connections among the electrical parts in the el compo box 300

Figure 27 300

In case of 12 18hp type 300

In case of 5 10hp type 300

Installation manual 293 300

Procedure for wiring inside units 300

Referring to figure 27 secure and wire the power and transmission wiring using the included clamp 1 2 and 3 300

Sien34 705 heat pump 60hz rxyq5 54p 300

Air tight test and vacuum drying 301

Note always use nitrogen gas for the airtightness test absolutely do not open the shutoff valve until the main power circuit insulation measurement has been completed measuring after the shutoff valve is opened will cause the insulation value to drop 301

Note the airtightness test and vacuum drying should be done using the liquid side and gas side shutoff valve service ports see the r 410a label attached to the front plate of the outdoor unit for details on the location of the service port see figure at right see shutoff valve operation procedure in 2 11 1 before working for details on handling the shutoff valve the refrigerant charge port is connected to unit pipe when shipped the unit contains the refrigerant so use caution when attaching the charge hose 301

Preparations 301

Referring to figure 28 connect an nitrogen tank refrigerant tank and a vacuum pump to the outdoor unit the refrigerant tank and the charge hose connection to refrigerant charge port or the valve a c in figure 28 are needed in 2 11 additional refrigerant charge and check operation the shutoff valve and valve a c in figure 28 should be open or closed as shown in the table below 301

Air tight test and vacuum drying method 302

Pipe insulation 303

Checking of device and installation conditions 304

About the refrigerant tank check whether the tank has a siphon pipe before charging and place the tank so that the refrigerant is charged in liquid form see the figure below 305

Additional refrigerant charge and check operation 305

Before working 305

Caution always use the proper refrigerant r 410a if charged with the refrigerant containing an improper material it may cause an explosion or accident r 410a is a mixed refrigerant so charging it as a gas will cause the refrigerant composition to change which may prevent normal operation 305

Gas side shutoff valve φ 15 φ 19 305

Heat pump 60hz rxyq5 54p sien34 705 305

Hp type 8hp type 10hp type 12hp type 14hp type 16hp type 18hp type 305

Installation manual 305

Liquid side shutoff valve 305

Note do not open the shutoff valve until 2 10 checking of device and installation conditions are completed if the shutoff valve is left open without turning on the power it may cause refrigerant to buildup in the compressor leading insulation degradation be sure to use the correct tools the shutoff valve is not a back seat type if forced it to open it might break the valve body when using a service port use the charge hose after tightening the cap make sure no refrigerant gas is leaking 305

Other tanks 305

Shutoff valve operation procedure when operating the shutoff valve follow the procedure instructed below 305

The outdoor unit is charged with refrigerant when shipped from the factory but depending on the size and length of the piping when installed it may require additional charging for charging the additional refrigerant follow the procedure in this chapter and then carry out the check operation 305

With siphon pipe 305

Φ 12 the 18hp type corresponds to the 15 diameter onsite piping using the accessory pipe 305

Φ 25 the 10hp type corresponds to the 22 diameter onsite piping using the accessory pipe the 12 18hp type corresponds to the 28 diameter onsite piping using the accessory pipe 305

Φ 9 the 12hp type corresponds to the 12 diameter onsite piping using the included piping 305

Caution make sure to use the protect tool protective groves and goggles when charging the refrigerant due to a danger of liquid hammer the refrigerant must not be charged over the allowable maximum amount when charging the refrigerant do not perform the refrigerant charging operation under working for the indoor unit when opening the front panel make sure to take caution to the fan rotation during the working after the outdoor unit stops operating the fan may keep rotation for a while 307

How to check how many units are connected it is possible to find out how many indoor or outdoor unit in the system are turned on by operating the push button on the pc board a1p of outdoor unit in case of multi system master unit follow the procedure below to check how many indoor or outdoor units are turned on 307

Note if operation is performed within 12 minutes after the indoor and outdoor units are turned on h2p will be lit on and the compressor will not operate in order to ensure uniform refrigerant distribution it may take up to around 10 minutes for the compressor to start up after the unit starting operating this is not a malfunction 307

Note press the mode button bs1 if you get confused while operating this returns to setting mode 1 default 307

Procedure of adding refrigerant charging and check operation 307

Warning electric shock warning make sure to close the el compo box lid before turning on the power when performing the refrigerant charging operation perform the setting on the pc board a1p of the outdoor unit and check the led display after the power is on via the inspection door which is in the el compo box lid use an insulated rod to operate the push buttons via the el compo box s inspection door there is a risk of electric shock if you touch any live parts since this operation must be performed with the power on 307

Display of normal system 309

Led display 3 off 4 on 5 blinking how to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 309

Note the refrigerant will be charged about 22kg in one hour at outdoor temp 30 c db 6kg at 0 c db if you need to speedup in case of multi system connect the refrigerant tanks to each outdoor unit as shown in the figure 33 309

Perform the refrigerant charging operation following refrigerant charging operation procedure as shown below and charge the remaining refrigerant of the additional charging amount for performing the refrigerant charging operation the push button on the pc board a1p of outdoor unit incase of multi system master unit are use see the figure 32 in addition the refrigerant are charged from the refrigerant charge port via the valve a see the figure 33 for operating the push button and opening and closing the valve follow the work procedure 309

Refrigerant charging operation procedure 1 open the liquid and gas side shutoff valves the valve a c must be closed the valve a c means the valves in the figure 33 309

3 check the led display on the outdoor unit pc board a1p is as shown in the table below and transmission is normal 311

4 make the onsite settings as needed using the push button bs1 bs5 on the outdoor unit pc board a1p with the power on see 2 12 2 onsite settings with the power on 5 perform the check operation following the check operation method of the service precautions label on the el compo box lid the system operation for about 40 minutes and automatically stops the check operation if the malfunction code is not displayed in the remote control after the system stop check operation is completed normal operation will be possible after 5 minutes if the malfunction code is displayed in the remote control correct the malfunction following remote control displays malfunction code and perform the check operation again 311

If any malfunction codes other than the above are displayed check the service manual for how to respond 311

Led display 3 off 4 on 5 blinking how to distinguish the master unit sub unit 1 and sub unit 2 in the multi system 311

Method 1 by the h8p multi led display 311

Method 2 by the transmission wiring to indoor unit 311

Remote control displays malfunction code 311

Onsite settings 312

Onsite settings with the power off 312

Onsite settings with the power on 312

Before test run 313

Checks after test run 313

Test run 313

Caution for refrigerant leaks 314

Heat pump 60hz rxyq5 54p 21 316

Heat pump cooling only 50hz rx y q5 54p 10 316

Part 3 operation manual 316

Heat pump cooling only 50hz rx y q5 54p 317

Operation manual 317

Pn08043 1 em06a044 317

System air conditioner 317

1 safety cautions 318

Operation manual 311 318

Sien34 705 operation manual 318

1 initial refrigerant charge 319

2 specifications 319

3 what to do before operation 319

About the specifications see single unit according to the indepen dent unit 319

Combination unit 319

Cool heat selector except rxq series 319

Cool heat selector operation modes 319

Cooling only rxq series 319

Figure 1 319

Figure 1 shows system with cool heat selector 319

Heat pumps rxyq series yes no 319

Indoor unit 319

Inlet air 319

Inlet air outlet air 319

Inverter series 319

Names and functions of parts refer to figure 1 319

Operation manual 319

Operation manual sien34 705 319

Outdoor unit 319

Outdoor units refer to figure 1 319

Outlet air 319

Single unit 319

This operation manual is for the following system with standard con trol before initiating operation contact your daikin dealer for the operation that corresponds to your system type and mark if your installation has a customized control system ask your daikin dealer for the operation that corresponds to your system 319

Wrong cleaning may make the plastics parts broken or cause fail ure of water leakage or electric shock do not touch the air inlet or aluminium fin of the air condi tioner otherwise injury may be caused do not place objects in direct proximity of the outdoor unit and do not let leaves and other debris accumulate around the unit leaves are a hotbed for small animals which can enter the unit once in the unit such animals can cause malfunctions smoke or fire when making contact with electrical parts 319

4 remote control and cool heat selector name and function of each switch and dis play refer to figure 2 and 3 320

4 remote control and cool heat selector name and function of each switch and display refer to figure 2 and 3 320

5 operation range 320

Figure 2 320

Figure 3 320

Operation manual 313 320

Sien34 705 operation manual 320

6 1 cooling heating and fan only operation 321

6 operation procedure 321

Figure 4 321

Figure 7 321

Operation manual 321

Operation manual sien34 705 321

6 2 program dry operation 322

6 3 adjusting the air flow direction refer to figure 6 only for double flow multi flow corner ceil ing suspended and wall mounted 322

Figure 5 322

Figure 6 322

Figure 8 322

Operation manual 315 322

Sien34 705 operation manual 322

6 4 programming start and stop of the system with timer refer to figure 9 323

6 5 setting the master remote control except rxq series refer to figure 10 323

Figure 10 323

Figure 11 323

Figure 13 323

Figure 9 323

Operation manual 323

Operation manual sien34 705 323

Refer to figure 13 323

6 6 precautions for group control system or two remote control control system 324

7 optimum operation 324

8 1 at the beginning of the season 324

8 2 at the end of the season 324

8 seasonal maintenance 324

9 1 the system does not operate 324

9 2 it stops sometimes 324

9 following symptoms are not air conditioner troubles 324

Figure 14 324

Operation manual 317 324

Sien34 705 operation manual 324

9 10 the units can give off odours 325

9 11 the outdoor unit fan does not spin 325

9 12 the display shows 325

9 13 the compressor or fan in the outdoor unit does not stop 325

9 14 the inside of an outdoor unit is warm even when the unit has stopped 325

9 15 it stops sometimes 325

9 16 hot air is emitted even though the unit is stopped 325

9 17 does not cool very well 325

9 3 cool heat cannot be changed over 325

9 4 fan operation is possible but cooling and heat ing do not work 325

9 5 the fan strength does not correspond to the set ting 325

9 6 the fan direction does not correspond to the setting 325

9 7 white mist comes out of a unit 325

9 8 noise of air conditioners 325

9 9 dust comes out of the unit 325

Operation manual 325

Operation manual sien34 705 325

10 trouble shooting 326

After sales service and warranty 326

Figure 12 326

Operation manual 319 326

S witch on 326

Sien34 705 operation manual 326

Trip po s ition bre a ker 326

Operation manual 327

Operation manual sien34 705 327

Heat pump 60hz rxyq5 54p 328

Operation manual 328

P171361 6j em06a034 328

System air conditioner 328

1 safety cautions 329

Operation manual 329

Operation manual sien34 705 329

1 initial refrigerant charge combination unit 330

2 specifications 330

3 what to do before operation 330

4 remote control and cool heat selector name and function of each switch and dis play refer to figure 2 and 3 330

4 remote control and cool heat selector name and function of each switch and display refer to figure 2 and 3 330

About the specifications see single unit according to the indepen dent unit 2 there is the case that rxyq16pyl or rxyq18pyl is composed of single unit 330

Cool heat selector 330

Cool heat selector operation modes 330

Figure 1 330

Figure 1 shows system with cool heat selector 330

Figure 2 330

Heat pumps rxyq series yes no 330

Indoor unit 330

Inlet air 330

Inlet air outlet air 330

Inverter series 330

Names and functions of parts refer to figure 1 330

Operation manual 323 330

Outdoor unit 330

Outdoor units refer to figure 1 330

Outlet air 330

Sien34 705 operation manual 330

Single unit 330

This operation manual is for the following system with standard con trol before initiating operation contact your daikin dealer for the operation that corresponds to your system type and mark if your installation has a customized control system ask your daikin dealer for the operation that corresponds to your system 330

Wrong cleaning may make the plastics parts broken or cause fail ure of water leakage or electric shock do not touch the air inlet or aluminium fin of the air condi tioner otherwise injury may be caused do not place objects in direct proximity of the outdoor unit and do not let leaves and other debris accumulate around the unit leaves are a hotbed for small animals which can enter the unit once in the unit such animals can cause malfunctions smoke or fire when making contact with electrical parts 330

5 operation range 331

6 1 cooling heating and fan only operation 331

6 operation procedure 331

Figure 3 331

Operation manual 331

Operation manual sien34 705 331

Figure 4 332

Figure 7 332

Operation manual 325 332

Sien34 705 operation manual 332

6 2 program dry operation 333

6 3 adjusting the air flow direction 333

Figure 5 333

Figure 6 333

Figure 8 333

Operation manual 333

Operation manual sien34 705 333

6 4 programming start and stop of the system with timer refer to figure 9 334

6 5 setting the master remote control refer to figure 10 334

Figure 10 334

Figure 11 334

Figure 13 334

Figure 9 334

Operation manual 327 334

Refer to figure 13 334

Sien34 705 operation manual 334

6 6 precautions for group control system or two remote control control system 335

7 optimum operation 335

8 1 at the beginning of the season 335

8 2 at the end of the season 335

8 seasonal maintenance 335

9 1 the system does not operate 335

9 2 it stops sometimes 335

9 following symptoms are not air conditioner troubles 335

Figure 14 335

Operation manual 335

Operation manual sien34 705 335

9 10 the units can give off odours 336

9 11 the outdoor unit fan does not spin 336

9 12 the display shows 336

9 13 the compressor or fan in the outdoor unit does not stop 336

9 14 the inside of an outdoor unit is warm even when the unit has stopped 336

9 15 it stops sometimes 336

9 16 hot air is emitted even though the unit is stopped 336

9 17 does not cool very well 336

9 3 cool heat cannot be changed over 336

9 4 fan operation is possible but cooling and heat ing do not work 336

9 5 the fan strength does not correspond to the set ting 336

9 6 the fan direction does not correspond to the setting 336

9 7 white mist comes out of a unit 336

9 8 noise of air conditioners 336

9 9 dust comes out of the unit 336

Operation manual 329 336

Sien34 705 operation manual 336

10 trouble shooting 337

After sales service and warranty 337

Figure 12 337

Operation manual 337

Operation manual sien34 705 337

S witch on 337

Trip po s ition bre a ker 337

Operation manual 331 338

Sien34 705 operation manual 338

Part 4 340

Part 4 precautions for new refrigerant r 410a 340

Precautions for new refrigerant r 410a 340

Precautions for new refrigerant r 410a 34 340

About refrigerant r 410a 341

Characteristics of new refrigerant r 410a 1 performance almost the same performance as r 22 and r 407c 2 pressure working pressure is approx 1 times more than r 22 and r 407c 3 refrigerant composition few problems in composition control since it is a quasi azeotropic mixture refrigerant 341

H 1 non azeotropic mixture refrigerant mixture of two or more refrigerants having different boiling points h 2 quasi azeotropic mixture refrigerant mixture of two or more refrigerants having similar boiling points h 3 the design pressure is different at each product please refer to the installation manual for each product reference 1 mpa 10 9716 kgf c 341

Outline 341

Precautions for new refrigerant r 410a 341

Precautions for new refrigerant r 410a 335 342

Sien34 705 precautions for new refrigerant r 410a 342

Thermodynamic characteristic of r 410a 342

Refrigerant cylinders 343

As for the charge mouthpiece and packing 1 2unf20 is necessary for mouthpiece size of charge hose 344

Copper tube material and thickness 344

Material 344

O o o o 1 2h 1 2h 1 2h 1 2h 1 2h 1 2h 1 2h 344

O o o o o 1 2h 1 2h 1 2h 1 2h 1 2h 1 2h 344

O soft annealed h hard drawn 344

Pipe size 344

R 410a is used under higher working pressure compared to previous refrigerants r 22 r 407c furthermore the refrigerating machine oil has been changed from suniso oil to ether oil and if oil mixing is occurred sludge results in the refrigerants and causes other problems therefore gauge manifolds and charge hoses that are used with a previous refrigerant r 22 r 407c can not be used for products that use new refrigerants be sure to use dedicated tools and devices 344

Service tools 344

Thickness t mm 0 0 0 1 1 1 1 1 1 1 1 344

Tool compatibility 344

Ve up r 407c 344

Ve up r 410a 344

Φ 6 φ 9 φ 12 φ 15 φ 19 φ 22 φ 25 φ 28 φ 31 φ 38 φ 44 344

Conventional flaring tools can be used when the work process is changed change of work process previously a pipe extension margin of 0 to 0 mm was provided for flaring for r 410a air conditioners perform pipe flaring with a pipe extension margin of 1 to 1 mm for clutch type only conventional tool with pipe extension margin adjustment can be used 345

Differences 2 change of dimension a 345

Flaring tool 345

Specifications 2 dimension a 345

Unit mm 345

Can not be used 348

Symbols 350

Drawings flow charts 352

Naamloze vennootschap zandvoordestraat 300 b 8400 oostende belgium www daikin eu btw be 0412 120 336 rpr oostende 355

Ésien34 705æëí 355

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